Quiz: Physiology

1)Testosterone is secreted by

A a. sertoli cells of testis B b.cells of adrenal medulla C c.cells of hypothalamus, D d.leydig cells of testis,

2) Temporary methods of birth control which are best suited to prevent transmission of disease are

A a.IUD, B b.spermatocides, C c.condom, . D d.Ru 486,

3) Cryptorchidism means

A a.descent of testis, B b.hypogonadism C c.hyperfunction of the testis, D , d.undescended testis,

4) Androgen binding protein is produced by

A a.adrenals, , B b.hypothalamus, C c.sertoli cells D d.leydig cells,

5) All of the following are produced by the corpus leuteum except

A a.estrogens, B b.progesteron C c.relaxin, D d.F.S.H.,

6) The testis is kept at a temperature of 2-3 degrees C below core temperature due to

A a.contraction of cremasteric, B b.contraction of dartos muscle, C c. contraction of internal oblique muscle D d.relaxation of cremasteric muscle and due to position of the testis outside the pelvic cavity

7) Early detection of pregnancy depends on detection of

A a.FSH,, B b.progesteron, C c.LH D d.HCG,

8) Secondary amenorrhoea can most commonly be caused in the following conditions EXCEPT

A a.age above 60 years B b.stress, C ,c.pregnancy, D d. competitive athletes,

8) Secondary amenorrhoea can most commonly be caused in the following conditions EXCEPT

A a.age above 60 years B b.stress, C ,c.pregnancy, D d. competitive athletes,

9) In the first 20 weeks of pregnancy,placental function is best assessed by urinary

A a.pregnanediol, , . B b.pregnanetriol, C c. chorionic gonadotropin D d.estriol,

10) Best method for diagnosing fetal lung maturity is

A a.clinical examination, B b.ultrasonography, C c.amniocentesis, D d.fetal kick counts

11)Full lung maturity is indicated by L/S ratio

A a.2:1, B b.3:1, C c.4:1, D d.5:1,

12) The best method to diagnose Rh sensitization in the mother is

A a. direct coombs test, , B b. indirect coombs test, C c.'c'antigen D d.'a'antigen,

12) The best method to diagnose Rh sensitization in the mother is

A a. direct coombs test, B b. indirect coombs test, C c.'c'antigen, D d.'a'antigen

13) Inhibin is secreted by

A a.graffian follicle, B b.corpus leuteum, C c.endometrium, D d.placenta

14) Maximal rise in the levels of prolactin are seen in

A a.at term, B b.after delivery, C c.during lactation only, D d.none of the above,

15) Oestrogens are given in high doses to the mother to suppress Dactation in

A a. cleft palate in child, B b.highly obese mother, C c.to prevent transmission of communicable diseases like HIV D d. inverted nipples

15-The process of sperm production takes place in the

A A-Epididymis B B-Vas deferens C C-Prostate glands D D-Seminiferous tubules

16-What is the primary function of Leydig cells?

A A-Regulate pituitary secretion of prolactin B B-Testosterone synthesis C C-Nitric oxide release D D-Inhibin secretion

17-The fluid from which of the following accessory gland neutralize the acidity ina vagina of the female?

A A-Seminal vesicle B B-Prostate gland C C-Cowper's gland D D-Bulbourethral gland

18-Name the hormone which is at peak during ovulation.

A A-Progesterone B B-Estrogen C C-FSH D d-LH

19-Which of the following represents the correct order of events during the menstrual cycle?

A A-FSH rise,ovulation, LH surge,luteal phase,menstruation B B-Luteal phase, menstruation,FSH rise,ovulation, follicular phase C C-Luteal phase,menstruation,FSH rise,follicular phase,ovulation D D-Menstruation,FSH rise,LH surge,ovulation,luteal phase

20-Which of the following represents the typical order of physical and physiologic changes of puberty in females?

A A-Menarche,thelarche,andrenarche, peak growth velocity B B-Thelarche,andrenarche,peak growth velocity, menarche C C-Peak growth velocity,adrenarche,menarche, thelarche D D-Adrenarche,menarche,thelarche,peak growth velocity

21-Which hormone effectively suppresses lactation?

A A-Prolactin B B-Estrogen C C-Growth hormone D D-Insulin

22-What tissue supplies progesterone during pregnancy until placental production alone is sufficient?

A A-The implantation site of the placenta B B-The remaiming granulosa cells are blocked from converting progesterone into estrogen C C-The fetal ovary D D-The corpus luteum in the ovary

23-Which cells in the seminiferous tubules progress through the first meiotic division?

A a.Sertoli cells B b.Spermatogonia C c .Spermatid D d.Primary spermatocyte

24-All the following hormones are secreted by testes except

A Androgen binding protein B Inhibin C Testosterone D Serotonin

25-All of the following are correct about Testosterone except

A Testosterone secretion starts at 7th week of fetal life by fetal genital ridge. B Testosterone causes maturation of Wolffian duct, which gives rise to male sex organs C Testosterone is necessary for descent of testes D Testosterone causes delay fusion of epiphyses of long bones with shaft.

26-Which gland releases a small amount of fluid just prior to ejaculation neutralize the acidity of the fluid of vas deference and of vaginal secretion?*

A Testes B Prostate gland Glans C penis Bulbourethral gland D Seminal vesicles

2 7-Name the site of sperm maturation?

A Epididymis B Ductus deferens C Spermatic cord D Urethra

28-Seminal vesicles produce*

A Sperm cells. B Testosterone C Fructose-rich fluid. D Estrogen

29-The testes in humans aresituated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for

A Providing a secondary sexual feature for exhibiting the male sex B Maintaining the scrotal temperature lower than the internal body temperature C Providing more space for the growth of epididymis D Escaping any possible compression by the visceral organs

30-The LH surge is primarily responsible for which menstrual cycle event?

A Apoptosis B Endometrial sloughing C A decrease in PGF2a D Ovulation

31-Which of the following statements is FALSE?

A Deviation from the typical 28-day menstrual cycle typically occurs because of different lengths in the follicular phases B Although one oocyte is typically ovulated per cycle,several will begin their development C Prolonged elevations in progesterone levels trigger the LH surge D During menstruation thromboxane and prostaglandin homeostasis control myometrial and vascular contractions in the uterus

32-Which of the following is the typical first visible sign of male puberty?

A Facial hair B Pubic hair C Enlargement of the testes D Lengthening of the penis

33-All of the following are true about human chorionic gonadotropin EXCEPT:

A In early pregnancy, the levels are expected to double every 2-3 days B It is structurally related to oxytocin, and binds to receptors to support the corpus luteum C It is initially produced by the trophoblast cells of the embryo D During the first trimester, it stimulates the fetal gonads to make steroid hormones responsible for sexual differentiation

35-Physiologic changes that commonly occur during menopause include all of the following,EXCEPT:

A Increased follicle-stimulating hormone(FSH) B Increased prostaglandins C Increased estradiol D Increased dopamine

35-Physiologic changes that commonly occur during menopause include all of the following,EXCEPT:

A Increased follicle-stimulating hormone(FSH) B Increased prostaglandins C Increased estradiol D Increased dopamine

35-Physiologic changes that commonly occur during menopause include all of the following,EXCEPT:

A Increased follicle-stimulating hormone(FSH) B Increased prostaglandins C Increased estradiol D Increased dopamine

36-The age of menopause is affected by all of the following,EXCEPT:

A Maternal menopausal age B Length of menstrual cycle C Smoking D Age at time of menarche

37-The secretory phase in the human menstrual cycle is also called

A Luteal phase and lasts for about 6 days B Follicular phase lasting for about 6 days C Luteal phase and lasts for about 13 days D Follicular phase and lasts for about 13 days

38-How long does the average human gestation last?

A 266 days after the beginning of thelast menstrual period B 280 days after the beginning of the last menstrual period C 240 days after the begimning of the last menstrual period D 294 days after the beginning of the last menstrual period

39-Which hormone is associated with production of milk?

A Growth hormone B Luteinizing hormone C Follicular stimulating hormone D Prolactin

40-Which hormone is responsible for ejection of milk?

A Growth hormone B Luteinizing hormone C Follicular stimulating hormone D Oxytocin

41-Which hormone initiates spermatogenesis?

A A FSH B B Testosterone C C LH D D DHEA-S

42-Using the following list of events, indicate the proper sequence concerning 1.High levels of estradiol 2. High levels of estradiol and progesterone 3. Luteinizing Hormone (LH)surge 4. Menstruation 5. Presence of a corpus albicans

A A 1,2,3,4,5 B B 1,2,3,5,4 C C 1,3,2,5,4 D D 4,2,3,1,5

43-Follicle stimulating hormone (FSH) is primarily responsible for

A A-conversion of cholesterol to pregnenolone B B-testosterone production C C-maintaining the corpus luteum D d-spermatogenesis

44-Which of the following cells is INCORRECTLY matched to the secretion or product it produces?

A granulosa cells-activin B interstitial cells of Leydig-aromatase C neurons of the arcuate nucleus - gonadotropin releasing hormone(GnRH) D Sertoli cells -antimullerian hormone (AMH)

45-Between ejaculations, sperm is primarily stored in the

A epididymis B rete testis C seminal vesicles D seminiferous tubules

46-Erection is controlled by the ……………. division of the autonomic nervous system and ejaculation is controlled by the division of the autonomic nervous

A parasympathetic-parasympathetic B parasympathetic-sympathetic C sympathetic-parasympathetic D sympathetic-sympathetic

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