Chapter 17 (Multiple Choice)
REF: 713 BLM: Higher Order 11. What is NOT associated with sex determination and differentiation in a male? a. degeneration of Wolffian ducts b. differentiation of indifferent gonadal tissue into testes under the influence of the sex-determining region of the Y chromosome c. production of H-Y antigen d. secretion of Müllerian-inhibiting factor
A
REF: 715 BLM: Remember 14. Which statement concerning testosterone is INCORRECT? a. It is secreted by the Sertoli cells of the testes. b. It exerts a general protein anabolic effect. c. It causes enlargement of the larynx and thickening of the vocal cords.
A
REF: 717 BLM: Remember 2. What is the primary reproductive organ in the male? a. testes b. prostate gland c. seminal vesicles d. bulbourethral glands
A
REF: 719 BLM: Higher Order 19. Why are the testes located outside the abdominal cavity in the scrotal sac? a. to permit spermatogenesis b. to protect the gonads against injury c. to permit testosterone secretion d. to maintain the testes at a higher than normal body temperature for normal testicular function
A
REF: 720 BLM: Remember 24. During spermatogenesis, one spermatogonium containing __________________ a. 46 chromosomes yield 16 spermatozoa, each containing 23 chromosomes. b. 46 chromosomes yield 1 spermatozoon containing 23 chromosomes and a polar body containing the other 23 chromosomes. c. 46 chromosomes yield 2 spermatozoa, each containing 23 chromosomes. d. 46 chromosomes yield 1 spermatozoon containing 46 chromosomes.
A
REF: 720 BLM: Remember 54. Which statement concerning spermatogenesis and oogenesis is INCORRECT? a. One primary spermatocyte or one primary oocyte containing 46 chromosomes respectively yields two spermatozoa or two ova, each containing 23 chromosomes. b. There is a continual supply of spermatogonia through mitotic activity. c. The first meiotic division involved in oogenesis is completed just prior to ovulation. d. It takes anywhere from about 11 to 50 years for the process of oogenesis to be completed.
A
REF: 724 BLM: Remember 36. Which statement is correct for the prostate gland? a. It secretes an alkaline solution that neutralizes the acidic vaginal secretions. b. It secretes mucus for lubrication. c. It provides a site for final maturation for fertility and motility for the spermatozoa. d. It contains portions of the ductus deferens.
A
REF: 724 BLM: Remember 39. Which structure consists of diploid chromosome number? a. primary spermatocyte b. secondary oocyte c. secondary spermatocyte d. spermatid
A
REF: 726 BLM: Remember 47. GnRH is secreted from the _____ and stimulates _____ secretion. a. anterior pituitary, FSH b. anterior pituitary, ADH c. posterior pituitary, FSH d. posterior pituitary, LH
A
REF: 728 BLM: Remember 45. Which of the following is NOT a component of the overall ejaculatory response? a. Arterioles supplying the penis dilate, causing the erectile tissue to fill with blood and the penis to become erect. b. The smooth muscles of the prostate, reproductive ducts, and seminal vesicles contract, resulting in emission. c. Semen is expelled from the penis by a series of rapid contractions of skeletal muscles at the base of the penis. d. Rhythmical contractions and accompanying systemic responses are associated with a pleasant sensation known as orgasm.
A
REF: 728 BLM: Remember 49. Which of the following is correct concerning the number of primary oocytes in a female? a. The number is decreased continually throughout her reproductive life from puberty to menopause. b. The number is constant during her reproductive life because those that are lost are continuously replaced by an equal number of new primary oocytes. c. The number increases at the time of menopause. d. The number contains haploid number of chromosomes.
A
REF: 729 BLM: Remember 50. Which statement is correct for FSH? a. It is an anterior pituitary hormone that stimulates antrum formation in developing ovarian follicles. b. It is produced by developing ovarian follicles. c. It is sometimes referred to as ICSH in males. d. It is secreted only in females.
A
REF: 731 BLM: Remember 52. Which layer of the uterus is shed each month with menstruation? a. stratum functionalis of endometrium b. myometrium c. perimetrium d. stratum basalis of endometrium
A
REF: 731 BLM: Remember 63. Which hormone is NOT secreted by the corpus luteum? a. FSH b. estrogen c. progesterone d. both estrogen and progesterone
A
REF: 733 BLM: Remember 48. What does NOT occur in the female sexual response cycle? a. erection b. tightening of the outer third of the vagina c. "tenting" of the upper two-thirds of the vagina
A
REF: 739 BLM: Remember 99. Which statement concerning progesterone is correct? a. It exerts a strong inhibitory influence on the uterine musculature. b. It is responsible for the development and maintenance of female secondary sex characteristics. c. It promotes duct development in the breasts. d. High levels of progesterone initiate the onset of labour.
A
REF: 740 BLM: Remember 73. During fertilization, sperm bind to specific receptor sites on the surface of what? a. zona pellucida b. corona radiata c. plasma membrane of the ovum d. polar body
A
REF: 743 BLM: Remember 102. What is NOT true of the control of milk ejection ? a. includes the anterior lobe of the pituitary gland b. involves contraction of myoepithelial cells of the mammary gland c. requires intact sensory nerves from the mammary gland
A
REF: 743 BLM: Remember 76. During the secretory phase, if the corpus luteum secretes high levels of estrogen what are the levels of progesterone? a. high b. low c. coprus luteum does not secret estrogen.
A
REF: 743 BLM: Remember 80. Which statement is NOT true for the trophoblast? a. It is destined to become the fetus. b. It is responsible for accomplishing implantation. c. It is destined to become the fetal portion of the placenta.
A
REF: 745 BLM: Remember 83. Which statement concerning the placenta is correct? a. The placenta secretes human chorionic gonadotropin, estrogen, and progesterone. b. The placenta serves the functions of the circulatory, respiratory, and digestive systems for the fetus. c. Maternal and fetal blood are mixed together within the placenta. d. The olacenta is fully formed in 4 weeks.
A
REF: 750 BLM: Remember 88. Which statement is INCORRECT for human chorionic gonadotropin? a. It is secreted by the corpus albicans. b. It is secreted by the developing placenta. c. It reaches its highest level within the first 2 months of gestation.
A
REF: 753 BLM: Remember 96. During pregnancy, what does NOT stimulate mammary gland development? a. FSH b. progesterone c. prolactin
A
REF: 710 BLM: Remember 21. Which statement concerning spermatogenesis isINCORRECT? a. It occurs in the seminiferous tubules. b. It begins with spermatocytes c. It is controlled by both testosterone and FSH.
B
REF: 710 BLM: Remember 4. What is a female accessory sex organ? a. bulbourethral gland b. clitoris c. labia minora d. ovary
B
REF: 711 BLM: Remember 26. What does NOT occur during spermatogenesis? a. FSH is required for spermatid remodelling. b. LH is required for spermatid remodelling. c. Testosterone is essential for both mitosis and meiosis of the germ cells.
B
REF: 713 BLM: Higher Order 10. Which statement concerning sex differentiation is INCORRECT? a. A Y chromosome stimulates production of H-Y antigen by primitive gonadal cells. b. Ovaries must be present for feminization of the reproductive tract and external genitalia to occur. c. Secretion of testosterone and Müllerian-inhibiting factor by the fetal testes induces development of the reproductive tract and external genitalia along male lines. d. Early in development, embryos of both sexes have the same indifferent reproductive tissues capable of differentiating into either a male or female reproductive system depending respectively on the presence or absence of masculinizing factors.
B
REF: 714 BLM: Higher Order 12. The embryonic genital tubercle develops into the _____ in males and the _____ in females. a. scrotum, labia majora b. glans penis, clitoris c. penis, labia minora d. Wolffian ducts, Müllerian ducts
B
REF: 715 BLM: Remember 13. Which factor is responsible for differentiating the embryonic gonads into testes? a. the sex-determining region of the X chromosome b. the sex-determining region of the Y chromosome c. autosomal chromosomes d. male gonadal-determining factor
B
REF: 719 BLM: Remember 15. Which statement concerning testosterone is INCORRECT? a. Its secretion is stimulated by LH. b. It is secreted by the seminiferous tubules. c. It stimulates spermatogenesis. d. It promotes closure of the epiphyseal plate.
B
REF: 720 BLM: Higher Order 30. Which statement concerning GnRH is INCORRECT? a. It stimulates both FSH and LH secretion. b. It is stimulated by testosterone. c. It has low-level activity during the prepubertal period.
B
REF: 720 BLM: Higher Order 25. Which of the following female structures has a similar tissue composition as the penis? a. cervical canal b. clitoris c. fallopian tube d. labia majora
B
REF: 720 BLM: Remember 22. What directly controls spermatogenesis? a. LH b. FSH c. prostaglandins
B
REF: 720 BLM: Remember 23. Which statement is correct for a secondary spermatocyte? a. It is haploid with unduplicated chromosomes. b. It is haploid with duplicated chromosomes. c. It is diploid with unduplicated chromosomes. d. It is diploid with duplicated chromosomes.
B
REF: 722 BLM: Remember 31. During spermatogenesis, what does the first meiotic division and second meiotic division yield? a. primary spermatocytes, secondary spermatocytes b. secondary spermatocytes, spermatids c. spermatids, spermatozoa d. spermatogonia, primary spermatocytes
B
REF: 722 BLM: Remember 33. A reduction in the secretion of what hormone may serve as the trigger for the onset of puberty? a. inhibin b. melatonin c. adrenal androgens d. gonadotropin-releasing hormone
B
REF: 724 BLM: Remember 37. Which statement is correct for the seminal vesicles? a. They store sperm prior to ejaculation. b. They supply fructose to be utilized by the sperm for energy. c. They secrete FSH. d. They play a primary role in lubricating the urethra.
B
REF: 728 BLM: Remember 46. What is the proper sequence of phases in the sexual response cycle? a. plateau, excitement, orgasmic, resolution b. excitement, plateau, orgasmic, resolution c. plateau, orgasmic, excitement, resolution d. resolution, plateau, orgasmic, excitement
B
REF: 731 BLM: Remember 40. Which statement is correct for prostaglandins? a. Prostaglandins are produced by most body tissues. b. Prostaglandins are derivatives of arachidonic acid. c. Prostaglandins act locally within or near their site of production. d. Prostaglandins promote sperm transport by stimulating smooth muscle contractions.
B
REF: 731 BLM: Remember 56. What is LH NOT responsible for? a. reinitiation of meiosis in the oocytes of developing follicles b. promoting estrogen synthesis by the follicular cells c. triggering ovulation
B
REF: 731 BLM: Remember 62. Which ovarian hormone is secreted during the follicular phase of the ovarian cycle? a. FSH b. estrogen c. progesterone d. LH
B
REF: 733 BLM: Higher Order 64. Which statement concerning control of ovarian hormone secretion is INCORRECT? a. Low levels of estrogen inhibit the hypothalamus and anterior pituitary in negativefeedback fashion. b. Under the influence of estrogen from developing follicles, FSH and LH secretion both continue to decline throughout the follicular phase. c. Both estrogen and progesterone are required to completely inhibit tonic LH secretion. d. A high level of estrogen stimulates LH secretion and initiates the LH surge.
B
REF: 733 BLM: Remember 60. Which of the following statements is not true about polar bodies being formed in oogenesis? a. to produce four gametes each with adequate amounts of nutrients b. to produce one functional gamete with maximal nutrient content c. to dispose of extra chromosomes
B
REF: 734 BLM: Remember 66. What is the proper sequence of the menstrual (uterine) cycle? a. menstrual phase, progestational phase, proliferative phase, ovulation b. menstrual phase, proliferative phase, ovulation, progestational phase c. proliferative phase, menstrual phase, ovulation, progestational phase d. ovulation, menstrual phase, proliferative phase, progestational phase
B
REF: 735 BLM: Remember 68. What does NOT occur during the menstrual phase of the uterine cycle? a. A new ovarian follicular phase is beginning. b. Estrogen and progesterone levels reach their highest concentration. c. Vasoconstriction of the uterine vessels occurs in response to release of a uterine prostaglandin.
B
REF: 735 BLM: Remember 69. Which of the following hormones causes the endometrial glands to fill with glycogen and endometrial blood vessels to become more numerous? a. estrogen b. progesterone c. FSH d. LH
B
REF: 737 BLM: Remember 53. One primary spermatocyte containing _____ chromosomes yields _____ spermatozoa containing _____ chromosomes, whereas one primary oocyte containing _____ chromosomes yields _____ ova (ovum) containing _____ chromosomes. a. 46, 2, 23, 46, 2, 23 b. 46, 4, 23, 46, 1, 23 c. 46, 4, 23, 46, 4, 23 d. 23, 1, 23, 23, 1, 23
B
REF: 737 BLM: Remember 71. What does NOT initiate menstruation? a. a rapid increase in estrogen levels b. a rapid drop in estrogen levels c. a rapid drop in progesterone levels
B
REF: 743 BLM: Remember 79. What happens in the blastocyst? a. The trophoblast is destined to become the fetus. b. The trophoblast is destined to become the fetal portion of the placenta. c. The trophoblast is destined to become the inner cell mass. d. The blastocoele serves the functions of the digestive system, lungs, and kidneys for the fetus.
B
REF: 744 BLM: Remember 81. What is the trophoblast of the blastocyst destined to become? a. the fetus b. the fetal portion of the placenta c. the inner cell mass d. the amniotic sac
B
REF: 745 BLM: Remember 84. Which statement is correct for human chorionic gonadotropin? a. It is secreted by the corpus luteum of pregnancy. b. Human chorionic gonadotropin in the urine is the basis of pregnancy diagnosis tests. c. It stimulates placental secretion of estrogen and progesterone. d. It continues to secrete throughout the pregnancy.
B
REF: 746 BLM: Remember 101. Which statement is correct with regards to the morula? a. The ,morula is surrounded by the zona pallucida. b. If the morula fails to descend into the uterus and continues to develop and implant in the lining of oviduct ectopic, then tubal pregnancy will result. c. The morula is formed when blastocyst continues to proliferate and differentiate.
B
REF: 746 BLM: Remember 105. Which factor does NOT contribute to parturition? a. The increasing ACTH (adrenocorticotropic hormone) secretion by the fetal pituitary causes the fetal adrenal glands to secrete more cortisol, which diffuses into the maternal circulation. b. Cortisol increases oxytocin and progesterone secretion, increasing plasma progesterone levels. c. The uterus stretches as the pregnancy progresses, initiating nerve impulses that stimulate oxytocin secretion from the posterior pituitary lobe. d. The number of oxytocin receptors on uterine muscle fibres increases, causing the uterus to become more sensitive to the effects of oxytocin.
B
REF: 750 BLM: Remember 100. How do birth control pills act as contraceptives? a. by preventing development of the endometrium into a suitable site for implantation b. by preventing ovulation and inhibiting GnRH and thus FSH and LH secretion c. by killing sperm d. by increasing muscular contractions in the female reproductive tract so that ovulated eggs are flushed out before they have a chance to be fertilized
B
REF: 754 BLM: Remember 91. According to the leading proposal, what initiates parturition? a. parasympathetic stimulation b. an increase in uterine responsiveness to oxytocin as a result of an increased concentration of myometrial oxytocin receptors c. a drop in oxytocin secretion d. a negative-feedback loop established between progesterone and oxytocin
B
REF: 755 BLM: Remember 92. Which statement concerning oxytocin is correct? a. It is not important for stimulating uterine contractions. b. It causes contraction of the myoepithelial cells surrounding the alveoli of the breast. c. It stimulates synthesis of milk by the milk glands. d. It is secreted from the ovary.
B
REF: 716 BLM: Remember 9. Which statement concerning sex determination and sex differentiation is INCORRECT a. An XY combination of sex chromosomes is a genetic male. b. The secretion of testosterone by the fetal gonads induces the development of male external genitalia and reproductive tract. c. The secretion of estrogen by the fetal gonads induces the development of female external genitalia and reproductive tract.
C
REF: 719 BLM: Remember 16. Which statement concerning testosterone is INCORRECT? a. It is responsible for the male secondary sexual characteristics. b. It stimulates spermatogenesis. c. Its secretion is stimulated by FSH.
C
REF: 719 BLM: Remember 17. Where are the sperm cells stored for maturation? a. prostate gland b. bulbourethral glands c. epididymis d. Leydig cells
C
REF: 720 BLM: Higher Order 27. What is NOT a function of Sertoli cells? a. providing a blood-testes barrier b. phagocytizing cytoplasm extruded from sperm during their development c. secreting testosterone d. secreting androgen-binding protein
C
REF: 720 BLM: Remember 29. What is NOT a function of the Sertoli cells? a. secreting seminiferous tubule fluid b. phagocytizing cytoplasm extruded from developing sperm and destroying defective sperm c. secreting melatonin d. secreting inhibin
C
REF: 722 BLM: Higher Order 104. When a woman is taking the contraceptive pill, or when she is pregnant, the levels of ovarian steroids and pituitary gonadotropins are most similar to those that normally occur during the _______________ a. menstrual phase b. follicular phase c. luteal phase d. proliferative phase
C
REF: 722 BLM: Remember 18. What is NOT stimulated by testosterone? a. masculinization of the developing reproductive tract and external genitalia b. descent of the testes into the scrotum c. spermatid remodelling d. development and maintenance of male secondary sexual characteristics
C
REF: 723 BLM: Remember 34. Which structure is inferior to the bladder in male? a. epididymis and vas deferens b. seminal vesicles c. prostate gland d. penis
C
REF: 724 BLM: Remember 35. Which statement is correct for the prostate gland? a. It secretes prostaglandins. b. It supplies fructose, which is utilized by the sperm for energy production. c. It secretes an alkaline medium that is important to neutralize acidic vaginal secretions. d. It secretes a mucus-like substance for lubrication.
C
REF: 724 BLM: Remember 42. Which is the correct sequence of the structures sperm travels through prior to ejaculation? a. ductus deferens, epididymis, ejaculatory duct, urethra b. urethra, ductus deferens, epididymis, ejaculatory duct c. epididymis, ductus deferens, ejaculatory duct, urethra d. epididymis, ductus deferens, ejaculatory duct, urethra
C
REF: 724 BLM: Remember 43. Which statement concerning erection is NOT true? a. It involves dilation of the arterioles supplying the sponge-like vascular spaces of the penis. b. It results from cGMP production induced by nitric oxide. c. It occurs when the seminiferous tubules of the penis become engorged with sperm.
C
REF: 724 BLM: Remember 7. Which hormone is NOT responsible for the development and maintenance of the secondary sexual characteristics? a. testosterone b. estrogen c. progesterone
C
REF: 733 BLM: Remember 51. What happens during oogenesis? a. Thousands of primary oocytes are formed. b. One primary oocyte yields 16 mature ova. c. One primary oocyte yields one mature ovum. d. Each ovum contains 46 chromosomes at the time of ovulation.
C
REF: 733 BLM: Remember 57. Ovulation occurs with peak concentrations of which of the following secreted into the blood? a. estrogen b. FSH c. LH d. progesterone
C
REF: 733 BLM: Remember 58. Which statement is correct for the corpus luteum? a. It develops from the polar body after ovulation. b. It develops from the fertilized ovum through a process of division and differentiation. c. It develops from the ruptured follicle after ovulation. d. During pregnancy, it is stimulated by estrogen and progesterone secretion from the placenta.
C
REF: 734 BLM: Higher Order 65. Which factor does NOT contribute to follicular development and estrogen secretion? a. FSH b. LH c. progesterone
C
REF: 735 BLM: Remember 67. Which is NOT true of the proliferative phase of the menstrual (uterine) cycle ? a. occurs when the ovarian cycle is in the follicular phase. b. lasts from menstruation to ovulation. c. occurs when the endometrium is shedding
C
REF: 737 BLM: Remember 70. During which phase of the uterine cycle is the secretion of progesterone at a significant level? a. menstrual phase b. proliferative phase c. secretory, or progestational, phase
C
REF: 738 BLM: Remember 72. What is the normal site of fertilization? a. ovary b. uterus c. oviduct d. vagina
C
REF: 739 BLM: Remember 77. When does implantation normally occur? a. in the oviduct. b. about three days after fertilization. c. during the secretory, or progestational, phase. d. about three days before fertilization
C
REF: 742 BLM: Remember 74. What does NOT characterizes fertilization? a. a sperm's fertilin proteins binding to the ovum's integrin molecules b. a block to polyspermy c. multiple sperms penetrating the ovum
C
REF: 742 BLM: Remember 75. Which statement is INCORRECT for implantation? a. It is accomplished as the trophoblastic cells break down the endometrial tissue. b. It occurs during the secretory, or progestational, phase of the menstrual cycle. c. It occurs within 24 hours after ovulation.
C
REF: 743 BLM: Remember 78. Which statement concerning implantation is INCORRECT? a. Implantation is accomplished by enzymatic activity of the trophoblastic layer of the blastocyst. b. The endometrium at the site of implantation is converted into the nutrient-rich decidua. c. Implantation occurs within 24 hours after fertilization.
C
REF: 744 BLM: Remember 82. The placenta performs the functions of all of the following systems for the fetus EXCEPT a. digestion. b. respiration. c. circulation. d. kidneys.
C
REF: 749 BLM: Remember 85. What is the source of estrogen and progesterone during the first 10 weeks of pregnancy? a. ovarian follicle b. placenta c. corpus luteum of pregnancy d. anterior pituitary
C
REF: 749 BLM: Remember 89. Which statement concerning human chorionic gonadotropin is INCORRECT? a. It is secreted by the placenta. b. It maintains the corpus luteum of pregnancy. c. It is secreted by the corpus luteum of pregnancy. d. The presence of chorionic gonadotropin in the urine is the basis of pregnancy diagnosis tests.
C
REF: 752 BLM: Remember 94. Which statement concerning oxytocin is INCORRECT? a. It is an extremely potent uterine muscle stimulant. b. It is involved in a positive feedback cycle during parturition. c. It is produced in the posterior pituitary gland
C
REF: 752 BLM: Remember 95. What does NOT stimulate uterine contractions? a. oxytocin from the posterior pituitary b. prostaglandin from the decidua c. progesterone from the placenta
C
REF: 756 BLM: Remember 97. Which statement concerning suckling is INCORRECT? a. It induces milk secretion due to prolactin release. b. It induces milk ejection due to oxytocin release. c. It stimulates LH and FSH secretion.
C
REF: 757 BLM: Remember 93. Which of the following statements is NOT true of CRH? a. It induces fetal cortisol production. b. It results in fetal lung development. c. It causes uterine contractions.
C
1. Which structure below secretes male sex hormone? a. seminal vesicles b. prostate gland c. Sertoli cells d. interstitial cells
D
REF: 710 BLM: Higher Order 6. What is the correct order in which the glands add seminal fluid to migrating sperm cells in the male reproductive tract? a. bulbourethral glands, prostate, seminal vesicles b. bulbourethral glands, seminal vesicles, prostate c. prostate, bulbourethral glands, seminal vesicles d. seminal vesicles, prostate, bulbourethral glands
D
REF: 711 BLM: Remember 5. What is NOT a function of the primary sex organs? a. production of estrogen b. production of testosterone c. production of progesterone d. production of seminal fluids
D
REF: 717 BLM: Higher Order 20. Which structure serves as a common passageway for two tracts in the male? a. ductus deferens b. ejaculatory duct c. ureter d. urethra
D
REF: 717 BLM: Remember 3. Which statement is correct for gonads? a. They consist of a pair of testes in males and ovaries in females. b. They produce gametes and secrete sex hormones. c. They refer to the externally visible genitalia in both sexes. d. a and b.
D
REF: 720 BLM: Remember 32. Which statement is correct for inhibin? a. It is produced by the Sertoli cells. b. It is produced by the developing sperm cells. c. It signals the pituitary gland. d. a and c.
D
REF: 721 BLM: Remember 28. What is the acrosome of the spermatozoon? a. It contains the sperm's genetic information. b. It contains mitochondria for energy production. c. It is a fructose-filled vesicle that provides energy for the spermatozoa. d. It contains enzymes that enable the sperm to penetrate the ovum.
D
REF: 724 BLM: Remember 38. Which of the following is NOT a function of the seminal vesicles? a. supplying fructose, which serves as the primary energy source for ejaculated sperm b. secreting prostaglandins c. secreting fibrinogen d. secreting an alkaline fluid that neutralizes the acidic vaginal secretions
D
REF: 724 BLM: Remember 41. Which statement is correct for prostaglandins? a. They are present in the semen and are secreted by the prostate gland. b. They may be involved in sperm transport within both the male and female reproductive tracts. c. They exert a powerful inhibitory effect on uterine musculature. d. They exert influences only on the reproductive system.
D
REF: 726 BLM: Remember 44. About how many sperm does an average human ejaculate contain? a. 20-30 million b. 100-120 million c. 100-120 thousand d. 300-400 million
D
REF: 729 BLM: Remember 8. Which statement is correct for the Wolffian ducts? a. They degenerate in females. b. They develop into a male reproductive tract under the influence of testosterone. c. They develop into male external genitalia under the influence of dihydrotestosterone. d. a and b.
D
REF: 731 BLM: Higher Order 61. Which of the following does NOT occur during the follicular phase of the ovarian cycle? a. the proliferative phase of the uterine cycle b. the menstrual phase of the uterine cycle c. estrogen secretion d. progesterone secretion
D
REF: 731 BLM: Remember 55. Which statement concerning oogenesis is correct? a. The first meiotic division occurs just prior to ovulation, and the second meiotic division is triggered by fertilization. b. Oogenesis is triggered by release of GnRH. c. Ogonia proliferate mitotically throughout the reproductive life of a female. d. a and b.
D
REF: 733 BLM: Remember 59. An increase in the secretion of what initiates the beginning of the ovarian cycle? a. estrogen b. progesterone c. LH d. FSH
D
REF: 743 BLM: Remember 87. The presence of what hormone in the urine forms the basis of pregnancy diagnosis tests? a. estrogen b. progesterone c. prolactin d. human chorionic gonadotropin
D
REF: 749 BLM: Remember 86. Which of the following is correct for the normal sequence of developmental stages? a. blastocyst, morula, zygote, embryo, fetus b. blastocyst, zygote, embryo, morula, fetus c. morula, fetus, embryo, blastocyst, zygote d. zygote, morula, blastocyst, embryo, fetus
D
REF: 749 BLM: Remember 90. Which statement is correct for the third stage of labour? a. It involves dilation of the cervix to 10 cm. b. It refers to the actual birth of the baby. c. It occurs when the entire uterine contents shift downward and the fetus's head is positioned against the cervix. d. It involves delivery of the placenta.
D
REF: 757 BLM: Remember 103. Which pair of items is NOT correctly associated? a. androgen binding protein-Leydig cells b. follicular stimulating hormones-Sertoli cells c. blood testis barrier-Sertoli cells d. spermatogonia-acrosome formation
D
REF: 757 BLM: Remember 98. Which statement concerning estrogen is INCORRECT? a. It promotes fat deposition. b. It promotes closure of the epiphyseal plates. c. It stimulates duct development in the breasts. d. It causes the cervical mucus to become thick and sticky.
D
