Chapter 28 - The Reproductive System

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Reproductive System Quizzes & Trivia

Self Test questions Wiley


Questions and Answers
  • 1. 

    The period of time when secondary sexual characteristics begin to develop and the potential foe sexual reproduction is called ___________.

    • A.

      Testosterone/estrogen surge

    • B.

      Maturity

    • C.

      Puberty

    • D.

      Troublesome

    Correct Answer
    C. Puberty
    Explanation
    Puberty is the correct answer because it refers to the period when secondary sexual characteristics start to develop and individuals become capable of sexual reproduction. It is a natural process that occurs during adolescence and involves hormonal changes, such as a surge in testosterone for males and estrogen for females. This stage marks the transition from childhood to adulthood and is characterized by physical, emotional, and social changes. Maturity, troublesome, and testosterone/estrogen surge are incorrect options as they do not accurately describe the specific period of sexual development.

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  • 2. 

    The first menses is called ______ and the permanent cessation of menses is called ______.

    • A.

      Menopause, menarche

    • B.

      Menarche, menopause

    Correct Answer
    B. Menarche, menopause
    Explanation
    Menarche refers to the first occurrence of menstruation in girls, typically around the age of 12-14. Menopause, on the other hand, refers to the permanent cessation of menstruation in women, usually occurring around the age of 45-55. These terms are used to describe two important milestones in a woman's reproductive life: the beginning and the end of her menstrual cycle.

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  • 3. 

    Spermatogenesis does not occur at normal core body temperature.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    Spermatogenesis, the process of sperm production, does not occur at normal core body temperature. The testes, where spermatogenesis takes place, are located outside the body in the scrotum. This is because sperm production requires a temperature slightly lower than the normal core body temperature. If the testes were inside the body, the higher temperature would inhibit the production of healthy sperm. Therefore, the statement is true.

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  • 4. 

    The route of sperm from the production in the testes to the exterior of the body is: seminiferous tubules, straight tubules, rete testes, epididymis, ductus (vas) deferens, ejaculatory duct, prostatic urethra, membranous urethra, spongy urethra, external urethral orifice.

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The route of sperm from the production in the testes to the exterior of the body is as follows: seminiferous tubules, straight tubules, rete testes, epididymis, ductus (vas) deferens, ejaculatory duct, prostatic urethra, membranous urethra, spongy urethra, external urethral orifice. This is the correct sequence of structures through which sperm travels before it is ejaculated out of the body.

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  • 5. 

    Which of the following are functions of Setolli cells? (1) protection of developing spermatogenic cells; (2) nourishment of spermatocytes, spermatids, and sperm; (3) phagocytosis of excess sperm cytoplasm as development proceeds; (4) mediation of the effects of testosterone and FSH; (5) control of movements of spermatogenic cells and release of sperm into the lumen of seminiferous tubules.

    • A.

      1, 2, 4, 5

    • B.

      1, 2, 3, 5

    • C.

      2, 3, 4, 5

    • D.

      1, 2, 3, 4

    • E.

      1, 2, 3, 4, 5

    Correct Answer
    E. 1, 2, 3, 4, 5
    Explanation
    Setolli cells have multiple functions in the seminiferous tubules. They provide protection to developing spermatogenic cells, nourish spermatocytes, spermatids, and sperm, phagocytose excess sperm cytoplasm during development, mediate the effects of testosterone and FSH, and control the movements of spermatogenic cells and release of sperm into the lumen of seminiferous tubules. Therefore, all of the options (1, 2, 3, 4, 5) are correct.

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  • 6. 

    Which of the following are true concerning estrogens?  (1) They promote development and maintenance of female reproductive structures and secondary sex characteristics; (2) They help control fluid and electrolyte balance; (3) They increase protein catabolism; (4) They lower blood cholesterol; (5) In moderate levels, they inhibit the release of GnRH and the secretion of LH and FSH.

    • A.

      1, 4, 5

    • B.

      1, 3, 4, 5

    • C.

      1, 2, 3, 5

    • D.

      1, 2, 3, 4

    • E.

      1, 2, 3, 4, 5

    Correct Answer
    A. 1, 4, 5
    Explanation
    Estrogens are hormones that play a crucial role in the development and maintenance of female reproductive structures and secondary sex characteristics, which supports the inclusion of statement (1) in the correct answer. Estrogens also have the ability to lower blood cholesterol levels, as stated in statement (4), which is true. Additionally, in moderate levels, estrogens inhibit the release of GnRH (gonadotropin-releasing hormone) and the secretion of LH (luteinizing hormone) and FSH (follicle-stimulating hormone), as mentioned in statement (5). Therefore, the correct answer is 1, 4, 5.

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  • 7. 

    Oral contraceptives work by (1) causing a thickening of the cervical mucus; (2) blocking the uterine tubes; (3) inhibiting the release of FSH and LH; (4) preventing ovulation; (5) disrupting the plasma membranes of sperm; (6) irritating the endometrial lining so that it is inhospitable for fetal development.

    • A.

      3

    • B.

      3, 4

    • C.

      1, 2, 5

    • D.

      1, 3, 4

    • E.

      1, 2, 3, 4, 5

    Correct Answer
    D. 1, 3, 4
    Explanation
    Oral contraceptives work by causing a thickening of the cervical mucus, inhibiting the release of FSH and LH, and preventing ovulation. These mechanisms help to create a barrier for sperm to reach the egg and reduce the chances of fertilization and pregnancy. Therefore, the correct answer is 1, 3, 4.

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  • 8. 

    Modified sudoriferous glands involved in lactation.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium

    Correct Answer
    13
    Explanation
    The correct answer is 13 because the mammary glands are the modified sudoriferous glands involved in lactation.

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  • 9. 

    A small, cylindrical mass of erectile tissue and nerves in the female; homologue of the male glans penis.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium

    Correct Answer
    10
    Explanation
    The correct answer is 10 - clitoris. The clitoris is a small, cylindrical mass of erectile tissue and nerves in the female reproductive system. It is considered the homologue of the male glans penis.

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  • 10. 

    Produce mucus in the female during sexual arousal and intercourse; homologus to the male bulbourethral glands.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium

    Correct Answer
    12
    Explanation
    The explanation for the correct answer (12) is that the greater vestibular glands, also known as Bartholin's glands, produce mucus in the female during sexual arousal and intercourse. These glands are homologous to the male bulbourethral glands, which also produce mucus during sexual activity. The mucus helps to lubricate the vagina and facilitate smoother intercourse.

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  • 11. 

    The group of cells that nourish the developing oocyte and begin to secrete estrogens.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium

    Correct Answer
    1
    Explanation
    The group of cells that nourish the developing oocyte and begin to secrete estrogens is called the follicle.

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  • 12. 

    A pathway for sperm to reach the uterine tubes; the site of menstration; the site of implantation of a fertilized ovum; the womb.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium

    Correct Answer
    5
    Explanation
    The correct answer is 5. The explanation for this answer is that the uterus is the site of menstruation, where the lining of the uterus is shed during the menstrual cycle. It is also the site of implantation of a fertilized ovum, where the fertilized egg attaches and develops into an embryo. Additionally, the uterus is commonly known as the womb, where a fertilized egg can implant and develop into a fetus during pregnancy.

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  • 13. 

    Produce progesterone, estrogens, relaxin, and inhibin.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium

    Correct Answer
    2
    Explanation
    The corpus luteum is responsible for producing progesterone, estrogens, relaxin, and inhibin. These hormones play important roles in the female reproductive system, including regulating the menstrual cycle, preparing the uterus for pregnancy, and maintaining pregnancy. The corpus luteum forms from the ruptured follicle after ovulation and continues to produce hormones until it degenerates. Therefore, choice 2, corpus luteum, is the correct answer.

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  • 14. 

    Draw the ovum into the uterine tube.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium

    Correct Answer
    4
    Explanation
    The correct answer is 4. The fimbriae are finger-like projections located at the end of the uterine tube. They help to draw the ovum (egg) from the ovary into the uterine tube.

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  • 15. 

    The opening between the uterus and vagina.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium

    Correct Answer
    6
    Explanation
    The correct answer is 6. The opening between the uterus and vagina is called the cervix.

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  • 16. 

    Muscular layer of uterus; responsible for expulsion of fetus from uterus.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium

    Correct Answer
    14
    Explanation
    The correct answer is 14. The myometrium is the muscular layer of the uterus that is responsible for the expulsion of the fetus from the uterus during childbirth. It consists of smooth muscle tissue that contracts and relaxes to facilitate the movement of the fetus out of the uterus and into the birth canal.

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  • 17. 

    Mucus-secreting glands in the female that are homologus to the prostate gland.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium11

    Correct Answer
    11
    Explanation
    The correct answer is 11. The paraurethral glands are mucus-secreting glands in the female that are homologous to the prostate gland in males. These glands are also known as Skene's glands and are located near the urethra. They secrete a small amount of mucus that helps lubricate the urethra during sexual arousal.

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  • 18. 

    The female copulatory organ; the birth canal.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium

    Correct Answer
    8
    Explanation
    The correct answer is 8. The vagina is the female copulatory organ and the birth canal. It is a muscular canal that connects the uterus to the external opening of the female reproductive system. During sexual intercourse, the penis enters the vagina, allowing for sperm to be deposited in the reproductive tract. During childbirth, the baby passes through the vagina to be born.

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  • 19. 

    Passageway for the ovum to the uterus; usual site of fertilization; site of tubal ligation.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium

    Correct Answer
    3
    Explanation
    The correct answer is 3. The passage is referring to the uterine tube, which is also known as the fallopian tube. This is the passageway for the ovum (egg) to travel from the ovary to the uterus. It is also the usual site of fertilization, where the sperm meets and fertilizes the egg. Additionally, the uterine tube is the site where tubal ligation can be performed, which is a surgical procedure to prevent pregnancy.

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  • 20. 

    Refers to the external genitals of the female.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium

    Correct Answer
    9
    Explanation
    The correct answer is 9 because the vulva refers to the external genitals of the female.

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  • 21. 

    The layer of uterine lining that is partially shed during each monthly cycle.Enter choice 1-14 without parenthesis or spaces.  (1) follicle; (2) corpus luteum; (3) uterine tube; (4) fimbriae; (5) uterus; (6) cervix; (7) endometrium; (8) vagina; (9) vulva; (10) clitoris; (11) paraurethral glands; (12) greater vestibular glands; (13) mammary glands; (14) myometrium

    Correct Answer
    7
    Explanation
    The layer of uterine lining that is partially shed during each monthly cycle is called the endometrium.

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  • 22. 

    Site of sperm maturation.  Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    6
    Explanation
    The correct answer is 6, epididymis. The epididymis is the site of sperm maturation, where sperm cells undergo further development and acquire the ability to swim and fertilize an egg.

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  • 23. 

    The male copulatory organ; a passageway for ejaculation of sperm and excretion of urine.Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    4
    Explanation
    The correct answer is 4. The penis is the male copulatory organ, responsible for the ejaculation of sperm and the excretion of urine. It contains erectile tissue that becomes engorged with blood during sexual arousal, allowing for penetration during sexual intercourse.

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  • 24. 

    Sperm-forming cells.Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    1
    Explanation
    The correct answer is 1, spermatogenic cells. Spermatogenic cells are the cells in the testes that undergo meiosis to produce sperm. They are responsible for the production of sperm cells through a process called spermatogenesis. These cells are found in the seminiferous tubules of the testes and are essential for male fertility.

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  • 25. 

    Produce an alkaline substance that protects sperm by neutralizing acids in the urethra.Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    12
    Explanation
    The bulbourethral glands, also known as Cowper's glands, produce an alkaline substance that neutralizes acids in the urethra. This alkaline substance helps protect the sperm by creating a more favorable environment for their survival and movement.

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  • 26. 

    Ejects sperm into the urethra just before ejaculation.Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    8
    Explanation
    The ejaculatory duct is responsible for ejecting sperm into the urethra just before ejaculation.

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  • 27. 

    The supporting structure for the testes.Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    5
    Explanation
    The scrotum is the supporting structure for the testes. It is a pouch of skin that holds the testes and helps to regulate their temperature. The scrotum contracts and relaxes to bring the testes closer to or further away from the body, depending on the temperature. This helps to maintain the optimal temperature for sperm production.

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  • 28. 

    Carries the sperm from the scrotum into the abdominopelvic cavity for release by ejaculation; is cut and tied as a means of sterilization.

    Correct Answer
    7
    Explanation
    The given answer, 7, is likely referring to the vas deferens. The vas deferens is a tube that carries sperm from the scrotum into the abdominopelvic cavity, where it is released during ejaculation. It is commonly cut and tied as a method of sterilization, known as a vasectomy.

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  • 29. 

    The shared terminal duct of the reproductive and urinary systems in the male.Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    13
    Explanation
    The correct answer is 13. The urethra is the shared terminal duct of the reproductive and urinary systems in the male. It serves as a passage for both urine and semen to exit the body.

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  • 30. 

    Surrounds the urethra at the base of the bladder; produces secretions that contribute to sperm motility and viability.Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    11
    Explanation
    The correct answer is 11. The prostate gland surrounds the urethra at the base of the bladder and produces secretions that contribute to sperm motility and viability.

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  • 31. 

    Produce testosterone.Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    3
    Explanation
    Leydig cells are responsible for producing testosterone.

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  • 32. 

    Supporting structure that consists of the ductus deferens, testicular artery, autonomic nerves, veins that drain the testes, lymphatic vessels, and cremaster muscle.Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    14
    Explanation
    The spermatic cord is a supporting structure that consists of various components including the ductus deferens, testicular artery, autonomic nerves, veins that drain the testes, lymphatic vessels, and the cremaster muscle. These components work together to provide support and function to the testes. Therefore, the correct answer is 14.

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  • 33. 

    Support and protect developing spermatogenic cells; secrete inhibin; form the blood-testis barrier.Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    2
    Explanation
    Sertoli cells are the correct answer because they support and protect developing spermatogenic cells, secrete inhibin, and form the blood-testis barrier.

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  • 34. 

    Secrete an alkaline fluid to help neutralize acids in the female reproductive tract; secrete fructose for use in ATP production by sperm.Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    10
    Explanation
    The correct answer is 10) seminal vesicle. The seminal vesicle secretes an alkaline fluid that helps neutralize acids in the female reproductive tract. Additionally, it secretes fructose which is used in ATP production by sperm.

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  • 35. 

    Contraction and relaxation moves testes near to or away from pelvic cavity.Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    15
    Explanation
    The cremaster muscle is responsible for the contraction and relaxation movements that move the testes near to or away from the pelvic cavity.

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  • 36. 

    Site of spermatogenesis.Enter choice 1-15 without parenthesis or spaces.  (1) spermatogenic cells; (2) Sertoli cells; (3) Leydig cells; (4) penis; (5) scrotum; (6) epididymis; (7) ductus deferens; (8) ejaculatory duct; (9) seminiferous tubules; (10) seminal vesicle; (11) prostate gland; (12) bulbourethral glands; (13) urethra; (14) spermatic cord; (15) cremaster muscle

    Correct Answer
    9
    Explanation
    The correct answer is 9 because the seminiferous tubules are the site of spermatogenesis, which is the process of sperm cell development and maturation.

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  • 37. 

    Relaxes the uterus by inhibiting myometrial contractions during monthly cycles; increases flexibility of the pubic symphysis during childbirth.Enter choice 1-12 without parenthesis or spaces.  (1) inhibin; (2) LH; (3) FSH; (4) testosterone; (5) estrogens; (6) progesterone; (7) relaxin; (8) human chorionic gonadotropin; (9) prolactin; (10) oxytocin; (11) androgens; (12) dihydrotestosterone

    Correct Answer
    7
    Explanation
    Relaxin is the correct answer because it is a hormone that relaxes the uterus by inhibiting myometrial contractions during monthly cycles. It also increases the flexibility of the pubic symphysis during childbirth.

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  • 38. 

    Stimulates Leydig cells to secrete testosterone in males and triggers ovulation in females.Enter choice 1-12 without parenthesis or spaces.  (1) inhibin; (2) LH; (3) FSH; (4) testosterone; (5) estrogens; (6) progesterone; (7) relaxin; (8) human chorionic gonadotropin; (9) prolactin; (10) oxytocin; (11) androgens; (12) dihydrotestosterone

    Correct Answer
    2
    Explanation
    LH (luteinizing hormone) stimulates Leydig cells to secrete testosterone in males and triggers ovulation in females.

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  • 39. 

    Inhibits production of FSH by the anterior pituitary gland.Enter choice 1-12 without parenthesis or spaces.  (1) inhibin; (2) LH; (3) FSH; (4) testosterone; (5) estrogens; (6) progesterone; (7) relaxin; (8) human chorionic gonadotropin; (9) prolactin; (10) oxytocin; (11) androgens; (12) dihydrotestosterone

    Correct Answer
    1
    Explanation
    Inhibin is a hormone that is produced by the ovaries and testes. It acts to inhibit the production of follicle-stimulating hormone (FSH) by the anterior pituitary gland. FSH is responsible for the development and maturation of follicles in the ovaries and the production of sperm in the testes. By inhibiting FSH production, inhibin helps to regulate the reproductive system and prevent excessive follicle development or sperm production.

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  • 40. 

    Posterior pituitary hormone responsible for uterine contraction and release of milk from mammary glands.Enter choice 1-12 without parenthesis or spaces.  (1) inhibin; (2) LH; (3) FSH; (4) testosterone; (5) estrogens; (6) progesterone; (7) relaxin; (8) human chorionic gonadotropin; (9) prolactin; (10) oxytocin; (11) androgens; (12) dihydrotestosterone

    Correct Answer
    10
    Explanation
    Oxytocin is the posterior pituitary hormone responsible for uterine contraction and the release of milk from mammary glands.

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  • 41. 

    Stimulates male pattern of development; stimulates protein synthesis; contributes to sex drive.Enter choice 1-12 without parenthesis or spaces.  (1) inhibin; (2) LH; (3) FSH; (4) testosterone; (5) estrogens; (6) progesterone; (7) relaxin; (8) human chorionic gonadotropin; (9) prolactin; (10) oxytocin; (11) androgens; (12) dihydrotestosterone

    Correct Answer
    4
    Explanation
    Testosterone is the correct answer because it stimulates male pattern of development, stimulates protein synthesis, and contributes to sex drive.

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  • 42. 

    Stimulates male external genital development.Enter choice 1-12 without parenthesis or spaces.  (1) inhibin; (2) LH; (3) FSH; (4) testosterone; (5) estrogens; (6) progesterone; (7) relaxin; (8) human chorionic gonadotropin; (9) prolactin; (10) oxytocin; (11) androgens; (12) dihydrotestosterone

    Correct Answer
    12
    Explanation
    Dihydrotestosterone (DHT) is a potent androgen that is responsible for the development of male external genitalia during fetal development. It is derived from testosterone through the action of the enzyme 5-alpha reductase. DHT binds to androgen receptors in target tissues, promoting the growth and differentiation of the male external genitalia. Therefore, choice 12, dihydrotestosterone, is the correct answer as it specifically stimulates male external genital development.

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  • 43. 

    Maintains the corpus luteum during the first trimester of pregnancy.Enter choice 1-12 without parenthesis or spaces.  (1) inhibin; (2) LH; (3) FSH; (4) testosterone; (5) estrogens; (6) progesterone; (7) relaxin; (8) human chorionic gonadotropin; (9) prolactin; (10) oxytocin; (11) androgens; (12) dihydrotestosterone

    Correct Answer
    8
  • 44. 

    Contribute to male sexual behavior, spermatogenesis, and libido.Enter choice 1-12 without parenthesis or spaces.  (1) inhibin; (2) LH; (3) FSH; (4) testosterone; (5) estrogens; (6) progesterone; (7) relaxin; (8) human chorionic gonadotropin; (9) prolactin; (10) oxytocin; (11) androgens; (12) dihydrotestosterone

    Correct Answer
    11
    Explanation
    Androgens contribute to male sexual behavior, spermatogenesis, and libido.

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  • 45. 

    Promotes the development of female reproductive structures; lowers blood cholesterol.Enter choice 1-12 without parenthesis or spaces.  (1) inhibin; (2) LH; (3) FSH; (4) testosterone; (5) estrogens; (6) progesterone; (7) relaxin; (8) human chorionic gonadotropin; (9) prolactin; (10) oxytocin; (11) androgens; (12) dihydrotestosterone

    Correct Answer
    5
    Explanation
    Estrogens promote the development of female reproductive structures and also help to lower blood cholesterol levels.

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  • 46. 

    Stimulates the initial secretion of estrogen by growing follicles; promotes follicle growth.Enter choice 1-12 without parenthesis or spaces.  (1) inhibin; (2) LH; (3) FSH; (4) testosterone; (5) estrogens; (6) progesterone; (7) relaxin; (8) human chorionic gonadotropin; (9) prolactin; (10) oxytocin; (11) androgens; (12) dihydrotestosterone

    Correct Answer
    3
    Explanation
    FSH (follicle-stimulating hormone) stimulates the initial secretion of estrogen by growing follicles and promotes follicle growth.

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  • 47. 

    Is secreted by the corpus luteum to maintain the uterine lining during the first trimester of pregnancy.Enter choice 1-12 without parenthesis or spaces.  (1) inhibin; (2) LH; (3) FSH; (4) testosterone; (5) estrogens; (6) progesterone; (7) relaxin; (8) human chorionic gonadotropin; (9) prolactin; (10) oxytocin; (11) androgens; (12) dihydrotestosterone

    Correct Answer
    6
    Explanation
    Progesterone is secreted by the corpus luteum to maintain the uterine lining during the first trimester of pregnancy.

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  • 48. 

    Anterior pituitary hormone that stimulates milk production.Enter choice 1-12 without parenthesis or spaces.  (1) inhibin; (2) LH; (3) FSH; (4) testosterone; (5) estrogens; (6) progesterone; (7) relaxin; (8) human chorionic gonadotropin; (9) prolactin; (10) oxytocin; (11) androgens; (12) dihydrotestosterone

    Correct Answer
    9
    Explanation
    Prolactin is the anterior pituitary hormone that stimulates milk production.

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  • 49. 

    The process during meiosis when portions of homologus chromosomes may be exchanged with each other.Enter choice 1-6 without parenthesis or spaces.  (1) zygote; (2) haploid; (3) diploid; (4) crossing-over; (5) polar body; (6) atresia

    Correct Answer
    4
    Explanation
    During meiosis, crossing-over occurs when portions of homologous chromosomes exchange with each other. This process is important for genetic variation as it leads to the creation of new combinations of alleles on chromosomes. Crossing-over increases genetic diversity by shuffling genetic material between homologous chromosomes, resulting in unique combinations of genes in the offspring.

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  • 50. 

    Refers to cells containing one-half the chromosome number.Enter choice 1-6 without parenthesis or spaces.  (1) zygote; (2) haploid; (3) diploid; (4) crossing-over; (5) polar body; (6) atresia

    Correct Answer
    2
    Explanation
    The correct answer is 2) haploid. Haploid refers to cells containing one-half the chromosome number. In humans, haploid cells are the gametes (sperm and egg cells) which contain only one set of chromosomes, while diploid cells have two sets of chromosomes.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

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  • Mar 19, 2023
    Quiz Edited by
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  • Jun 02, 2010
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