Human Physiology Exam 5

67 Questions | Total Attempts: 96

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Human Physiology Quizzes & Trivia

Questions and Answers
  • 1. 
    1.      Gametes like eggs and sperm are ______ containing ____ of each 23 chromosomes while somatic cells are ______ containing _____ of each 23 chromosomes.
    • A. 

      A.haploid, 2, diploid, 1

    • B. 

      B.diploid, 1, haploid, 2

    • C. 

      C.haploid, 1, diploid, 2

    • D. 

      D.diploid, 2, haploid, 1

  • 2. 
    Which of the following statements concerning sex determination and sex differentiation is correct?
    • A. 

      A.An XY combination of sex chromosomes is a genetic male.

    • B. 

      B.The secretion of testosterone by the fetal gonads induces the development of male external genitalia and reproductive tract.

    • C. 

      C.Sexual differentiation does not occur until the ninth month of gestation.

    • D. 

      D.Both (a) and (b) above.

    • E. 

      E.All of the above.

  • 3. 
    Which of the following is NOT a function of sertoli cells?
    • A. 

      A.Secrete inhibin

    • B. 

      B.form blood-testis barrier

    • C. 

      C.provide nutrients for developing sperm

    • D. 

      D.secrete testosterone

    • E. 

      E.secrete fluid into lumen of seminiferous tubules to support sperm development and transport.

  • 4. 
    Penile erection is under the control of the __________ while ejaculation is under the control of the_________________.
    • A. 

      A.somatic nervous system : parasympathetic nervous system

    • B. 

      B.sympathetic nervous system : parasympathetic nervous system

    • C. 

      C.parasympathetic nervous system : sympathetic nervous system

    • D. 

      D.somatic nervous system : sympathetic nervous system

    • E. 

      E.sympathetic nervous system : somatic nervous system

  • 5. 
    Spermatogenesis:
    • A. 

      A.occurs in the seminiferous tubules.

    • B. 

      B.begins with haploid spermatogonia that undergo meiosis to form diploid sperm.

    • C. 

      C.is controlled by prolactin.

    • D. 

      D.occurs only prior to birth in males.

    • E. 

      E.all of the above.

  • 6. 
    Which of the following is an incorrect pairing of a structure in the female reproductive system and its function?
    • A. 

      A.ovary : produce eggs and sex hormones

    • B. 

      B.oviduct : conducts egg from ovary to uterus

    • C. 

      C.uterus : site of fertilization

    • D. 

      D.cervix : opening of uterus that leads to the vagina

    • E. 

      E.vagina : receptacle for penis and birth canal

  • 7. 
    The number of primary oocytes in a female:
    • A. 

      A.is fixed prior to birth.

    • B. 

      B.is maintained constant during her reproductive life because those that are lost are continuously replaced by an equal number of new primary oocytes.

    • C. 

      C.increases at the time of menopaouse.

    • D. 

      D.is unlimited.

    • E. 

      E.none of the above

  • 8. 
     During the ovarian cycle after the secondary oocyte has been ovulated the follicle cells become the _______ which secretes estrogen and progesterone.
    • A. 

      A.polar body

    • B. 

      B.zona pellucida

    • C. 

      C.corpus luteum

    • D. 

      D.endometrium

    • E. 

      E.placenta

  • 9. 
    Ovulation is triggered by the release of _______ from the anterior pituitary.
    • A. 

      A.testosterone

    • B. 

      B.estrogen

    • C. 

      C.progesterone

    • D. 

      D.luteinizing hormone (LH)

    • E. 

      E.oxytocin

  • 10. 
    During the uterine cycle the endometrium thickens in response to the follicle cells producing and releasing ________.
    • A. 

      A.follicle stimulating hormone (FSH)

    • B. 

      B.estrogen

    • C. 

      C.testosterone

    • D. 

      D.luteinizing hormone (LH)

    • E. 

      E.oxytocin

  • 11. 
     Which of the following is NOT an effect of progesterone?
    • A. 

      A.promote secretory-phase uterine conditions

    • B. 

      B.trigger ovulation

    • C. 

      C.promote growth of glandular tissue in breasts

    • D. 

      D.suppress milk production

    • E. 

      E.suppress uterine contractile activity

  • 12. 
    If fertilization and subsequently implantation occur what hormone is produced by the embryo to prevent the corpus luteum from degenerating?
    • A. 

      A.prolactin

    • B. 

      B.oxytocin

    • C. 

      C.testosterone

    • D. 

      D.human chorionic gonadotropin

    • E. 

      E.growth hormone

  • 13. 
    The kidneys?
    • A. 

      A.regulate plasma ionic concentration

    • B. 

      B.regulate plasma osmolarity

    • C. 

      C. regulate plasma volume

    • D. 

      D. regulate plasma hydrogen concentration

    • E. 

      E. all of the above

  • 14. 
    Order the following nephron components and associated structures to indicate the flow of the filtrate through the tubular component of the nephron.1-descending limb of loop of Henle 2-Bowman's capsule 3-collecting tubule 4-ascending limb of loop of Henle 5-distal tubule 6-proximal tubule
    • A. 

      A. 4,6,5,3,2,1

    • B. 

      B. 2,1,4,3,5,6

    • C. 

      C. 2,5,6,3,1,4

    • D. 

      D. 2,6,1,4,5,3

    • E. 

      E. 3,2,6,1,4,5

  • 15. 
    Excretion:
    • A. 

      A. is the movement of a substance from glomerular capillary blood into the tubular lumen

    • B. 

      B. is the movement of a substance from the peritubular capillary blood into the tubular lumen

    • C. 

      C. is the movement of a substance from the tubular lumen into the peritubular capilliary blood

    • D. 

      D. is everything that is filtered or secreted and not subsequently absorbed

  • 16. 
    Reabsorption:
    • A. 

      A. is the movement of a substance from glomerular capillary blood into the tubular lumen

    • B. 

      B. is the movement of a substance from the peritubular capillary blood into the tubular lumen

    • C. 

      C. is the movement of a substance from the tubular lumen into the peritubular capilliary blood

    • D. 

      D. is everything that is filtered or secreted and not subsequently absorbed

  • 17. 
    Filtration:
    • A. 

      A. is the movement of a substance from glomerular capillary blood into the tubular lumen

    • B. 

      B. is the movement of a substance from the peritubular capillary blood into the tubular lumen

    • C. 

      C. is the movement of a substance from the tubular lumen into the peritubular capilliary blood

    • D. 

      D. is everything that is filtered or secreted and not subsequently absorbed

  • 18. 
    Secretion:
    • A. 

      A. is the movement of a substance from glomerular capillary blood into the tubular lumen

    • B. 

      B. is the movement of a substance from the peritubular capillary blood into the tubular lumen

    • C. 

      C. is the movement of a substance from the tubular lumen into the peritubular capilliary blood

    • D. 

      D. is everything that is filtered or secreted and not subsequently absorbed

  • 19. 
    Afferent arteriole vasodilation_______blood flow into the glomerulus, which causes the glomerular-capillary blood pressure to _____, leading to a(n) ______ in the net filtration pressure and a resultant ______in the glomuerular filtration rate.
    • A. 

      A. increases, increase, increase, increase

    • B. 

      B. increases, decrease, decrease, increase

    • C. 

      C. increases, increase, decrease, decrease

    • D. 

      D. decreases, decrease, increase, increase

    • E. 

      E. decreases, decrease, decrease, decrease

  • 20. 
    In tubuloglomerular feedback  the macula densa in the distal tubule detect a(n) _______ in flow of tubular fluid and release a paracrine factor that causes to afferent arteriole to ________. 
    • A. 

      A. decrease: constrict

    • B. 

      B. increase: dilate

    • C. 

      C. increase : constrict

    • D. 

      D. decrease : dilate

    • E. 

      E. increase: pulse

  • 21. 
    Which of the following is TRUE concerning glucose reabsorption from the proximal tubule?
    • A. 

      A. Glucose is never 100% reabsorbed.

    • B. 

      B. Glucose is actively transported across the apical membrane by cotransport with sodium.

    • C. 

      C. Glucose is actively transported across the basolatereal membrane by a glucose pump.

    • D. 

      D. Glucose reabsorption is passive.

    • E. 

      E. All of the above are true of glucose reabsorption.

  • 22. 
    The following ion is secreted into the distal and collecting tubules under the control of aldosterone. 
    • A. 

      A. potassium

    • B. 

      B. chloride

    • C. 

      C. sodium

    • D. 

      D. hydrogen

    • E. 

      E. calcium

  • 23. 
    The vertical osmotic gradient in the kidney:
    • A. 

      A. is established and maintained by the countercurrent system in the loops of Henle in the corticol nephrons

    • B. 

      B. makes it possible to make urine of variable concentration depending on the needs of the body

    • C. 

      C. is found in the renal medulla

    • D. 

      D. both (b) and (c)

    • E. 

      E. all of the above

  • 24. 
    Antidiuretic hormone (ADH) secretion:
    • A. 

      A. induces the kidneys to produce a small volume of concentrated urine.

    • B. 

      B. is stimulated when the body fluids are hypertonic

    • C. 

      C. is stimulated when the arterial blood pressure is low

    • D. 

      D. increases water reabsorption from the collecting ducts

    • E. 

      E. all of the above

  • 25. 
    Sodium reabsorption takes place in all of the tubular components except for the: a. proximal tubule.
    • A. 

      A. proximal tubule.

    • B. 

      B. descending limb of the loop of henle.

    • C. 

      C. ascending limb of the loop of henle.

    • D. 

      D. distal tubule

    • E. 

      E. collecting duct.

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