Repro Quiz -- Exam 4

56 Questions | Total Attempts: 407

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Reproductive System Quizzes & Trivia

Questions and Answers
  • 1. 
    The dartos and cremaster muscles are important to the integrity of the male reproductive system. Which of the following is true about the role they play?
    • A. 

      They contract to push sperm along the ductus deferens

    • B. 

      They are responsible for penile erection

    • C. 

      They contract to allow ejaculation

    • D. 

      They regulate the temperature of the testes

  • 2. 
    The ability of sperm cells to move along the ductus deferens is due to ________________________.
    • A. 

      Enzymatic activity

    • B. 

      Gravity

    • C. 

      Peristaltic contractions

    • D. 

      Hormonal action

  • 3. 
    The ability of a male to ejaculate is due to the action of __________________.
    • A. 

      Parasympathetic nerves

    • B. 

      Luteinizing hormone

    • C. 

      The bulbospongiosus muscles

    • D. 

      The dartos muscle

  • 4. 
    The most important risk for testicular cancer in young males is ______________________.
    • A. 

      Non descent of the testes

    • B. 

      Smoking

    • C. 

      A diet high in fat

    • D. 

      Sexually transmitted infections

  • 5. 
    Which of the following glands are responsible for 60% of the synthesis of semen?
    • A. 

      The prostate

    • B. 

      The pituitary

    • C. 

      The bulbourethral glands

    • D. 

      The seminal vesicles

  • 6. 
    Which of the following hormones controls the release of anterior pituitary gonadotropins?
    • A. 

      GnRH

    • B. 

      FSH

    • C. 

      LH

    • D. 

      Testosterone

  • 7. 
    Development of male reproductive structures depends on which of the following events?
    • A. 

      The suppression of inhibin

    • B. 

      That the female hormones are suppressed during pregnancy

    • C. 

      Secretion of male hormones prenatally and lasting into the first few months after birth

    • D. 

      That human gonadotropin be synthesized in the first week of the pregnancy

  • 8. 
    The primary function of the uterus is to ____________________________.
    • A. 

      Regulate the ovarian and menstrual cycles

    • B. 

      Synthesize female hormones

    • C. 

      Protect the ovaries

    • D. 

      Receive, retain, and nourish a fertilized ovum

  • 9. 
    Why is the blood-testis barrier important?
    • A. 

      Because immature sperm cells lose their motility when they encounter any blood component

    • B. 

      Because spermatozoa and developing cells produce surface antigens that are recognized as foreign by the immune system

    • C. 

      Because some blood contents are toxic to the spermatozoa

    • D. 

      Actually, the blood-testis barrier has no function

  • 10. 
    The structures that receive the ovulated oocyte, providing a site for fertilization, are called the ________________________________
    • A. 

      Fallopian tubes

    • B. 

      Fimbriae

    • C. 

      Infundibula

    • D. 

      Graafian follicles

  • 11. 
    If gametes were diploid like somatic cells, how many chromosomes would the zygote contain?
    • A. 

      Half the diploid number with no change in development

    • B. 

      Twice the diploid number, and with every succeeding generation, the chromosome number would continue to double and normal development could not occur

    • C. 

      Triple the diploid number, and with every succeeding generation, the chromosome number would continue to triple and normal development would not occur

    • D. 

      There is no relationship between gametes and somatic cells

  • 12. 
    Human egg and sperm are similar in that ________________________.
    • A. 

      They are about the same size

    • B. 

      They have the same number of chromosomes

    • C. 

      They have the same degree of motility

    • D. 

      About the same number of each is produced per month

  • 13. 
    The constancy of the chromosome number from one cell generation to the next is maintained through ____________________.
    • A. 

      Cytokinesis

    • B. 

      DNA synthesis

    • C. 

      Mitosis

    • D. 

      Meiosis

  • 14. 
    Fertilization generally occurs in the _________________.
    • A. 

      Uterus

    • B. 

      Vagina

    • C. 

      Ovary

    • D. 

      Fallopian tubes

  • 15. 
    Spermiogenesis involves the __________________________________.
    • A. 

      Formation of four haploid cells from a spermatogonium

    • B. 

      Sequence of events in the rete testis

    • C. 

      Formation of a functional sperm by the stripping away of superfluous cytoplasm

    • D. 

      Movement of sperm in the female genital tract

  • 16. 
    All of the following can be considered male secondary sex characteristics except the ___________________________.
    • A. 

      Increasing mass of the skeleton

    • B. 

      Development of testes as opposed to ovaries

    • C. 

      Lowering of the voice

    • D. 

      Development of body hair

  • 17. 
    In humans, separation of the cells at the two-cel state following fertilization may lead to the production of twins, which in this case would be ____________________.
    • A. 

      Identical

    • B. 

      Fraternal

    • C. 

      Of different sexes

    • D. 

      Dizygotic

  • 18. 
    Characteristics of the mature sperm include the _________________________________.
    • A. 

      Absence of coiled mitochondria

    • B. 

      Presence of two X chromosomes in approximately half the sperm

    • C. 

      Absence of an acrosome

    • D. 

      Presence of Y chromosomes in approximately half the sperm

  • 19. 
    How do the testes respond to exposure to excessive body warmth?
    • A. 

      Excessive warmth has no effect on the testicles because of their location in the scrotum

    • B. 

      Excessive warmth is actually beneficial in that it speeds up the maturation of sperm

    • C. 

      They move close to the pelvic cavity

    • D. 

      They move away from the pelvic cavity

  • 20. 
    Effects of estrogen include ________________________________.
    • A. 

      Increased oiliness of the skin

    • B. 

      Deepening of the voice

    • C. 

      Growth of the breasts at puberty

    • D. 

      Growth of the larynx

  • 21. 
    Secretion of progesterone stimulates _________________________________.
    • A. 

      Contraction of uterine muscles

    • B. 

      Preparation of the mammary glands for lactation

    • C. 

      Development of the female secondary sex characteristics

    • D. 

      Secretory activity of the uterine myometrium

  • 22. 
    Which of the following statements about sperm is not true?
    • A. 

      They contain very little cytoplasm or stored nutrients

    • B. 

      They are sluggish in an alkaline environment

    • C. 

      The sperm midpiece consists of mitochondria spiraled tightly around the contractile filaments of the tail.

    • D. 

      The acrosome is produced by the Golgi apparatus and contains hydrolytic enzymes

  • 23. 
    The cells that produce testosterone in the testis are called _________________.
    • A. 

      Spermatocytes

    • B. 

      Spermatogonia

    • C. 

      Interstitial cells

    • D. 

      Sustentacular cells

  • 24. 
    The testicular cells that construct the blood-testis barrier are the ____________________________.
    • A. 

      Sustentacular cells

    • B. 

      Interstitial cells

    • C. 

      Spermatogonia

    • D. 

      Spermatocytes

  • 25. 
    Which of the following occurs as a result of undescended testes?
    • A. 

      Inadequate or nonviable sperm will be produced

    • B. 

      Inadequate blood supply will retard the development of the testes.

    • C. 

      Male sex hormones will not be circulated in the body.

    • D. 

      Sperm will have no means of exit from the body

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