Chapter 27 The Reproductive System (TB)

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lonelygirl
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219544
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Chapter 27 The Reproductive System (TB)
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2013-05-19 01:39:03
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Biology Anatomy Physiology
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Biology 103A
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  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. 
    D) They regulate the temperature of the testes.
    (this multiple choice question has been scrambled)
  2. The ability of sperm cells to move along the ductus deferens is due to ________. 

    A) gravity 
    B) peristaltic contractions 
    C) enzymatic activity 
    D) hormonal action
    B) peristaltic contractions
    (this multiple choice question has been scrambled)
  3. The ability of a male to ejaculate is due to the action of ________. 

    A) the bulbospongiosus muscles
    B) luteinizing hormone 
    C) parasympathetic nerves 
    D) the dartos muscle 
    A) the bulbospongiosus muscles
    (this multiple choice question has been scrambled)
  4. The most important risk for testicular cancer in young males is ________. 

    A) smoking 
    B) a diet high in fat 
    C) nondescent of the testes 
    D) sexually transmitted infections
    C) nondescent of the testes
    (this multiple choice question has been scrambled)
  5. Which of the following glands are responsible for 60% of the synthesis of semen? 

    A) the prostate 
    B) the seminal vesicles 
    C) the bulbourethral glands 
    D) the pituitary
    B) the seminal vesicles
    (this multiple choice question has been scrambled)
  6. Which of the following hormones controls the release of anterior pituitary gonadotropins? 

    A) FSH 
    B) testosterone
    C) LH 
    D) GnRH 
    D) GnRH
    (this multiple choice question has been scrambled)
  7. Development of male reproductive structures depends on which of the following events? 

    A) secretion of male hormones prenatally and lasting into the first few months after birth 
    B) that the female hormones are suppressed during pregnancy 
    C) the suppression of inhibin 
    D) that human gonadotropin be synthesized in the first week of the pregnancy
    A) secretion of male hormones prenatally and lasting into the first few months after birth
    (this multiple choice question has been scrambled)
  8. The primary function of the uterus is to ________.

    A) receive, retain, and nourish a fertilized ovum
    B) regulate the ovarian and menstrual cycles 
    C) protect the ovaries 
    D) synthesize female hormones 
    A) receive, retain, and nourish a fertilized ovum
    (this multiple choice question has been scrambled)
  9. Why is the blood-testis barrier important?

    A) because some blood contents are toxic to the spermatozoa 
    B) because spermatozoa and developing cells produce surface antigens that are recognized as foreign by the immune system 
    C) Actually, the blood-testis barrier has no function.
    D) 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
    (this multiple choice question has been scrambled)
  10. The structures that receive the ovulated oocyte, providing a site for fertilization, are called the ________. 

    A) Graafian follicles 
    B) infundibula 
    C) fallopian tubes 
    D) fimbriae
    C) fallopian tubes
    (this multiple choice question has been scrambled)
  11. If gametes were diploid like somatic cells, how many chromosomes would the zygote contain? 

    A) There is no relationship between gametes and somatic cells.
    B) triple the diploid number, and with every succeeding generation, the chromosome number would continue to triple and normal development would not occur 
    C) twice the diploid number, and with every succeeding generation, the chromosome number would continue to double and normal development could not occur 
    D) half the diploid number with no change in development 
    C) twice the diploid number, and with every succeeding generation, the chromosome number would continue to double and normal development could not occur
    (this multiple choice question has been scrambled)
  12. Human egg and sperm are similar in that ________. 

    A) they have the same degree of motility 
    B) about the same number of each is produced per month 
    C) they have the same number of chromosomes 
    D) they are about the same size
    C) they have the same number of chromosomes
    (this multiple choice question has been scrambled)
  13. The constancy of the chromosome number from one cell generation to the next is maintained through ________. 

    A) mitosis 
    B) cytokinesis 
    C) meiosis 
    D) DNA synthesis
    C) meiosis
    (this multiple choice question has been scrambled)
  14. Fertilization generally occurs in the ________. 

    A) fallopian tubes
    B) vagina 
    C) ovary
    D) uterus 
    A) fallopian tubes
    (this multiple choice question has been scrambled)
  15. Spermiogenesis involves the ________.

    A) sequence of events in the rete testis
    B) movement of sperm in the female genital tract 
    C) formation of a functional sperm by the stripping away of superfluous cytoplasm 
    D) formation of four haploid cells from a spermatogonium 
    C) formation of a functional sperm by the stripping away of superfluous cytoplasm
    (this multiple choice question has been scrambled)
  16. All of the following can be considered male secondary sex characteristics except the ________. 

    A) increasing mass of the skeleton
    B) lowering of the voice 
    C) development of testes as opposed to ovaries 
    D) development of body hair 
    C) development of testes as opposed to ovaries
    (this multiple choice question has been scrambled)
  17. In humans, separation of the cells at the two-cell state following fertilization may lead to the production of twins, which in this case would be ________. 

    A) fraternal 
    B) of different sexes
    C) dizygotic
    D) identical 
    D) identical
    (this multiple choice question has been scrambled)
  18. Characteristics of the mature sperm include the ________. 

    A) absence of an acrosome 
    B) absence of coiled mitochondria
    C) presence of Y chromosomes in approximately half the sperm 
    D) presence of two X chromosomes in approximately half the sperm 
    C) presence of Y chromosomes in approximately half the sperm
    (this multiple choice question has been scrambled)
  19. How do the testes respond to exposure to excessive body warmth? 

    A) They move away from the pelvic cavity. 
    B) Excessive warmth is actually beneficial in that it speeds up the maturation of sperm.
    C) They move close to the pelvic cavity. 
    D) Excessive warmth has no effect on the testicles because of their location in the scrotum. 
    A) They move away from the pelvic cavity.
    (this multiple choice question has been scrambled)
  20. Effects of estrogen include ________. 

    A) growth of the breasts at puberty 
    B) increased oiliness of the skin 
    C) growth of the larynx
    D) deepening of the voice 
    A) growth of the breasts at puberty
    (this multiple choice question has been scrambled)
  21. Secretion of progesterone stimulates ________. 

    A) secretory activity of the uterine myometrium 
    B) preparation of the mammary glands for lactation 
    C) development of the female secondary sex characteristics
    D) contraction of uterine muscles 
    B) preparation of the mammary glands for lactation
    (this multiple choice question has been scrambled)
  22. Which of the following statements about sperm is not true? 

    A) They contain very little cytoplasm or stored nutrients. 
    B) The sperm midpiece consists of mitochondria spiraled tightly around the contractile filaments of the tail.
    C) The acrosome is produced by the Golgi apparatus and contains hydrolytic enzymes.
    D) They are sluggish in an alkaline environment. 
    B) The sperm midpiece consists of mitochondria spiraled tightly around the contractile filaments of the tail.
    (this multiple choice question has been scrambled)
  23. The cells that produce testosterone in the testis are called ________. 

    A) interstitial cells
    B) sustentacular cells 
    C) spermatocytes 
    D) spermatogonia 
    A) interstitial cells
    (this multiple choice question has been scrambled)
  24. The testicular cells that construct the blood-testis barrier are the ________. 

    A) sustentacular cells 
    B) spermatogonia 
    C) spermatocytes 
    D) interstitial cells
    A) sustentacular cells
    (this multiple choice question has been scrambled)
  25. Which of the following occurs as a result of undescended testes? 

    A) Sperm will have no means of exit from the body. 
    B) Inadequate blood supply will retard the development of the testes.
    C) Male sex hormones will not be circulated in the body. 
    D) Inadequate or nonviable sperm will be produced. 
    D) Inadequate or nonviable sperm will be produced.
    (this multiple choice question has been scrambled)
  26. Erection of the penis results from ________. 

    A) a parasympathetic reflex
    B) parasympathetic activation of the bulbourethral glands 
    C) dilation of the veins in the penis 
    D) a sympathetic reflex 
    A) a parasympathetic reflex
    (this multiple choice question has been scrambled)
  27. Which is not a part of the proliferative phase of the female menstrual cycle? 

    A) late in this phase, cervical mucus becomes thin and crystalline 
    B) vesicular follicle growth 
    C) corpus luteum 
    D) development of endometrial cells
    C) corpus luteum
    (this multiple choice question has been scrambled)
  28. Which of the choices below is not a function of the vagina? 

    A) serves as a passageway for menstrual flow 
    B) receives semen from the penis during sexual intercourse
    C) serves as a passageway for the primary oocyte 
    D) is the birth canal 
    C) serves as a passageway for the primary oocyte
    (this multiple choice question has been scrambled)
  29. Select the correct statement about male sexual response. 

    A) Erection is the result of vascular spaces in the erectile tissues filling with blood. 
    B) Expansion of the penile tissues results in dilation of the venous outflow. 
    C) Sympathetic impulses are responsible for causing penile arteriolar dilation, resulting in erection. 
    D) Ejaculation is the result of parasympathetic stimulation.
    A) Erection is the result of vascular spaces in the erectile tissues filling with blood.
    (this multiple choice question has been scrambled)
  30. Which of the choices below is not a function of testosterone? 

    A) stimulates the male pattern of development 
    B) contributes to male sexual behavior and spermatogenesis 
    C) stimulates protein synthesis 
    D) stimulates mammary gland development
    D) stimulates mammary gland development
    (this multiple choice question has been scrambled)
  31. Which male hormone inhibits the secretion of FSH? 

    A) inhibin 
    B) ICSH 
    C) testosterone
    D) ACTH 
    A) inhibin
    (this multiple choice question has been scrambled)
  32. During the secretory phase of the menstrual cycle ________. 

    A) estrogen reaches its highest levels 
    B) the Graafian follicle forms
    C) progesterone levels are at their highest 
    D) LH reaches its highest levels 
    C) progesterone levels are at their highest
    (this multiple choice question has been scrambled)
  33. Select the correct statement about the uterine cycle. 

    A) During the secretory phase, estrogen levels are at their highest. 
    B) If fertilization occurs, the corpus luteum is maintained by a hormone secreted by the developing embryo.
    C) The menstrual phase of the cycle is from day 1 to day 8. 
    D) During the proliferative phase, levels of progesterone rise as the follicle begins to produce more hormone. 
    B) If fertilization occurs, the corpus luteum is maintained by a hormone secreted by the developing embryo.
    (this multiple choice question has been scrambled)
  34. Which of the choices below is not a part of the brain-testicular axis? 

    A) testes
    B) anterior pituitary gland 
    C) hypothalamus 
    D) thalamus 
    D) thalamus
    (this multiple choice question has been scrambled)
  35. Which of the following statements is true concerning the mammary glands of both males and females? 

    A) The only time hormones target breast tissue is during pregnancy and lactation. 
    B) Both sexes are equally prone to breast cancer. 
    C) All lumps identified in breast tissue are malignant. 
    D) The mammary glands are modified sweat glands that are actually part of the integumentary system.
    D) The mammary glands are modified sweat glands that are actually part of the integumentary system.
    (this multiple choice question has been scrambled)
  36. Normally menstruation occurs when ________. 

    A) blood levels of FSH fall off 
    B) blood levels of estrogen and progesterone decrease 
    C) the corpus luteum secretes estrogen
    D) blood levels of estrogen and progesterone increase 
    B) blood levels of estrogen and progesterone decrease
    (this multiple choice question has been scrambled)
  37. The basic difference between spermatogenesis and oogenesis is that ________. 

    A) in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced from the parent cell 
    B) the mature ovum is n, while the sperm is 2n 
    C) spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only
    D) during spermatogenesis two more polar bodies are produced 
    A) in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced from the parent cell
    (this multiple choice question has been scrambled)
  38. Occasionally three polar bodies are found clinging to the mature ovum. One came from an unequal division of the ovum, but from where did the other two arise? 

    A) The first polar body has also divided to produce two polar bodies. 
    B) What you really see are two polar bodies and the sperm that will fertilize the egg.
    C) One is an undeveloped primary oocyte that failed to mature. 
    D) There were originally four polar bodies and one disappeared. 
    A) The first polar body has also divided to produce two polar bodies.
    (this multiple choice question has been scrambled)
  39. Which of the following will occur after ovulation? 

    A) The secretion of anterior pituitary gonadotropins is enhanced. 
    B) The corpus luteum secretes estrogen only. 
    C) The corpus luteum prepares to become a corpus albicans.
    D) The endometrium enters its secretory phase. 
    D) The endometrium enters its secretory phase. 
    (this multiple choice question has been scrambled)
  40. Why doesn’t semen enter the urinary bladder during ejaculation? 

    A) There is no common duct between the reproductive system and the urinary system. 
    B) The smooth muscle sphincter at the base of the urinary bladder closes. 
    C) There is no urge to urinate during sexual intercourse because of the suppression of LH by testosterone buildup in the blood. 
    D) Ejaculation is a parasympathetic reflex resulting in no response by urinary contraction muscles.
    B) The smooth muscle sphincter at the base of the urinary bladder closes. 
    (this multiple choice question has been scrambled)
  41. Spermatogenesis ________. 

    A) involves a kind of cell division limited to the gametes 
    B) results in the formation of diploid cells 
    C) is the process of releasing mature sperm cells into the lumen of the seminiferous tubule 
    D) uses mitosis to produce gamete cells
    A) involves a kind of cell division limited to the gametes 
    (this multiple choice question has been scrambled)
  42. Which hormone is absolutely necessary for ovulation to occur? 

    A) progesterone 
    B) FSH 
    C) LH 
    D) estrogen
    C) LH
    (this multiple choice question has been scrambled)
  43. The brain-testicular axis ________. 

    A) is the tight relationship between the cortex and the control of testicular function 
    B) involves a positive feedback loop control of spermatogenesis
    C) involves posterior pituitary release of regulating hormones 
    D) involves FSH and LH release 
    D) involves FSH and LH release 
    (this multiple choice question has been scrambled)
  44. Select the correct statement about testosterone control. 

    A) Inhibin and testosterone exert positive feedback on the hypothalamus and pituitary. 
    B) FSH stimulates testicular production of testosterone. 
    C) The pineal gland is believed to be the gland that exerts the most influence in testosterone control.
    D) GnRH from the hypothalamus causes FSH and LH release from the anterior pituitary. 
    D) GnRH from the hypothalamus causes FSH and LH release from the anterior pituitary. 
    (this multiple choice question has been scrambled)
  45. Which of the following is a correct statement about uterine tubes? 

    A) The mesometrium supports the uterine tubes along their entire length.
    B) The infundibulum is the funnel-shaped region near the ovary. 
    C) The ampulla is the narrow constricted region. 
    D) The isthmus is the normal site of fertilization. 
    B) The infundibulum is the funnel-shaped region near the ovary. 
    (this multiple choice question has been scrambled)
  46. Select the correct statement about the hormonal events of the ovarian cycle. 

    A) Rising levels of estrogen start follicle development. 
    B) The follicle begins to secrete progesterone in response to estrogen stimulation. 
    C) High estrogen levels result in a surge of LH release. 
    D) The LH surge stimulates further development of the secondary oocyte.
    C) High estrogen levels result in a surge of LH release. 
    (this multiple choice question has been scrambled)
  47. Which of these statements about sexually transmitted infections is false? 

    A) Genital herpes is caused by a virus that may cause intermittent lesions.
    B) Gonorrhea is caused by a bacterium that can bring on painful discharges in males. 
    C) Syphilis is caused by a virus that may lead to death if untreated. 
    D) Chlamydia is caused by bacteria that can often be asymptomatic or bring on a wide variety of symptoms. 
    C) Syphilis is caused by a virus that may lead to death if untreated. 
    (this multiple choice question has been scrambled)
  48. Which of the following statements about spermatogenesis is not true? 

    A) The spermatogonium forms the primary spermatocyte. 
    B) Each spermatid forms two sperm.
    C) The secondary spermatocytes each form two spermatids. 
    D) The primary spermatocyte forms two secondary spermatocytes. 
    B) Each spermatid forms two sperm.
    (this multiple choice question has been scrambled)
  49. A boy who has not passed through puberty sustains an injury to his anterior pituitary such that FSH is no longer released, but LH is normal. After he grows to maturity, one would expect that he would ________. 

    A) be sterile 
    B) not develop secondary sex characteristics 
    C) have impaired function of interstitial cells
    D) be impotent (unable to have an erection)
    A) be sterile 
    (this multiple choice question has been scrambled)
  50. Which of the following statements about the female reproductive process is not true?

    A) Rebuilding the endometrium is under the control of prolactin. 
    B) Fertilization usually occurs in the fallopian tube. 
    C) Ovulation usually occurs 14 days after the beginning of menses. 
    D) The monthly discharge of the uterus (menses) is initiated by the decrease in secretion of female hormones.
    A) Rebuilding the endometrium is under the control of prolactin.
    (this multiple choice question has been scrambled)
  51. A low secretion of luteinizing hormone (LH) in the normal male adult would cause ________. 

    A) excessive beard growth 
    B) increased spermatogenesis 
    C) shrinkage of the anterior pituitary gland
    D) decreased testosterone secretion 
    D) decreased testosterone secretion 
    (this multiple choice question has been scrambled)
  52. All of the following statements referring to the uterine cycle are true except ________. 

    A) FSH and LH directly promote development of the uterine endometrium 
    B) a decrease in the levels of ovarian hormones signals menstruation
    C) the corpus luteum is formed from the ruptured follicle after ovulation 
    D) estrogen is secreted by the developing follicle in the follicular phase of the cycle 
    A) FSH and LH directly promote development of the uterine endometrium 
    (this multiple choice question has been scrambled)
  53. Which of the following phases or processes in the monthly reproductive cycle of the female occur simultaneously? 

    A) regression of the corpus luteum and a decrease in ovarian progesterone secretion
    B) early follicular development and the secretory phase in the uterus 
    C) maximal LH secretion and menstruation 
    D) maximal steroid secretion by the corpus luteum and menstruation 
    A) regression of the corpus luteum and a decrease in ovarian progesterone secretion
    (this multiple choice question has been scrambled)
  54. The duct system of the male reproductive system does not include the ________. 

    A) corpus spongiosum
    B) urethra 
    C) ductus deferens 
    D) epididymis 
    A) corpus spongiosum
    (this multiple choice question has been scrambled)
  55. An ovulating oocyte is actually activated by hormones about ________ days before ovulation. 

    A) 110
    B) 14 
    C) 85 
    D) 28 
    C) 85
    (this multiple choice question has been scrambled)
  56. Prostate cancer is _______. 

    A) most common in Asians 
    B) often the result of a distortion of the urethra
    C) sometimes a slow-growing cancer that may never represent a threat to the patient 
    D) the number-one cause of death in men 
    C) sometimes a slow-growing cancer that may never represent a threat to the patient 
    (this multiple choice question has been scrambled)
  57. The ________ plexus of testicular veins assists in cooling the testis.
    pampiniform
  58. Surgical cutting of the ductus deferens as a form of birth control is called a(n) ________.
    vasectomy
  59. The erectile tissue around the urethra is the corpus ________.
    spongiosum
  60. The midpiece of the sperm tail contains mostly ________.
    mitochondria
  61. The ________ cells of the testis nourish the newly formed sperm cells.
    sustentacular
  62. The suspensory ligament and mesovarium are part of the ________ ligament.
    broad
  63. A follicle with only a small antrum in it would be classified as a(n) ________ follicle.
    secondary
  64. The small opening of the uterus that sperm would first enter is called the ________.
    external os
  65. The portion of the uterine endometrium that is not sloughed off every month is called the ________.
    stratum basalis
  66. ________ is caused by Treponema pallidum.
    Syphilis
  67. It is necessary for the testes to be kept below body temperature. True or False
    True
  68. The prostate atrophies as a man ages, and it usually causes no health problems. True or False
    False
  69. The hormone oxytocin combines with enzymes in semen to enhance sperm motility. True or False
    False
  70. When a couple is having difficulty conceiving a child, it is necessary to investigate the sperm of the male. True or False
    True
  71. The amount of testosterone and sperm produced by the testes is dependent on the influence of FSH alone. True or False
    False
  72. Ovarian follicles contain mature eggs. True or False
    False
  73. Sexually transmitted diseases are the most important cause of reproductive disorders. True or False
    True
  74. Reproduction is not possible in males or females until one year after puberty has begun. True or False
    False
  75. Males do not go through menopause as females do, but there is a steady reduction in their testosterone levels. True or False
    True
  76. Pain during ovulation is called dysmenorrhea. True or False
    False
  77. A human egg or sperm contains 23 pairs of chromosomes. True or False
    True
  78. The Pap smear is a test to detect cancerous changes in cells of the cervix. True or False
    True
  79. The adenohypophyseal hormone that triggers ovulation is estrogen. True or False
    False
  80. The female hormone corresponding to the male ICSH is FSH. True or False
    False
  81. The male urethra serves the urinary system only. True or False
    False
  82. Both tetrads and crossovers are seen during meiosis. True or False
    True
  83. Failure to attain erection is called impotence. True or False
    True
  84. Ovulation occurs near the end of the ovarian cycle. True or False
    False
  85. The corpus luteum secretes progesterone only. True or False
    False
  86. Female orgasm is required for conception. True or False
    False
  87. The first sign of puberty in females is budding breasts. True or False
    True
  88. The primary function of the testes is to produce testosterone. True or False
    False
  89. The stage in meiosis where chromosomal exchange takes place is telophase. True or False
    False
  90. The diamond-shaped area between the anus and clitoris in the female is the vulva. True or False
    False
  91. The soft mucosal lining of the uterus is the endometrium. True or False
    True
  92. A scrotal muscle that contracts in response to cold environmental temperature is the cremaster. True or False
    True
  93. The secretions of the bulbourethral glands neutralize traces of acidic urine in the urethra and serve as a lubricant during sexual intercourse. True or False
    True
  94. The zona pellucida is formed as the follicle becomes a secondary follicle. True or False
    True
  95. The molecule that enhances the ability of testosterone to promote spermatogenesis is inhibin. True or False
    False

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