Chapter 27 Exam Due NLT Thursday, July 31, 2015 Name MULTIPLE CHOICE: match the term(s) or description with the appropriate letter of the structure. Figure 27.1 Using Figure 27.1, match the following: 1) Stem cell. 1) 2) First cells with n number of chromosomes. 2) 3) Type B spermatogonia. 3) 4) Early spermatids. 4) 5) Primary spermatocyte. 5) 6) Acrosome. 6) 1
Figure 27.3 Using Figure 27.3, match the following: 7) The stage called ovulation. 7) 8) Vesicular (Graafian) follicle. 8) 9) Primary follicles. 9) 10) Primordial follicle. 10) 11) Corpus luteum. 11) 12) Mature follicle. 12) TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 13) It is necessary for the testes to be kept below body temperature. 13) 14) The hormone oxytocin combines with enzymes in semen to enhance sperm motility. 14) 15) When a couple is having difficulty conceiving a child, it is necessary to investigate the sperm of the male. 15) 16) The amount of testosterone and sperm produced by the testes is dependent on the influence of FSH alone. 16) 17) Pain during ovulation is called dysmenorrhea. 17) 2
18) The adenohypophyseal hormone that triggers ovulation is estrogen. 18) 19) A human egg or sperm contains 23 pairs of chromosomes. 19) 20) The Pap smear is a test to detect cancerous changes in cells of the cervix. 20) 21) Ovulation occurs near the end of the ovarian cycle. 21) 22) The corpus luteum secretes progesterone only. 22) 23) The molecule that enhances the ability of testosterone to promote spermatogenesis is inhibin. 23) 24) The first sign of puberty in females is budding breasts. 24) 25) The primary function of the testes is to produce testosterone. 25) MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 26) The most important risk for testicular cancer in young males is. 26) A) sexually transmitted infections B) a diet high in fat C) nondescent of the testes D) smoking 27) Which of the following glands are responsible for 60% of the synthesis of semen? 27) A) the seminal vesicles B) the pituitary C) the prostate D) the bulbourethral glands 28) Which of the following hormones controls the release of anterior pituitary gonadotropins? 28) A) FSH B) GnRH C) LH D) testosterone 29) Human egg and sperm are similar in that. 29) A) they have the same number of chromosomes B) they are about the same size C) they have the same degree of motility D) about the same number of each is produced per month 30) Fertilization generally occurs in the. 30) A) uterus B) vagina C) fallopian tubes D) ovary 31) Secretion of progesterone stimulates. 31) 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 32) Effects of estrogen include. 32) A) increased oiliness of the skin B) growth of the larynx C) growth of the breasts at puberty D) deepening of the voice 3
33) Which is not a part of the proliferative phase of the female menstrual cycle? 33) A) development of endometrial cells B) corpus luteum C) late in this phase, cervical mucus becomes thin and crystalline D) vesicular follicle growth 34) Erection of the penis results from. 34) A) dilation of the veins in the penis B) parasympathetic activation of the bulbourethral glands C) a sympathetic reflex D) a parasympathetic reflex 35) The cells that produce testosterone in the testis are called. 35) A) interstitial cells B) spermatogonia C) sustentacular cells D) spermatocytes 36) Which of the choices below is not a function of testosterone? 36) A) stimulates protein synthesis B) stimulates the male pattern of development C) stimulates mammary gland development D) contributes to male sexual behavior and spermatogenesis 37) Which male hormone inhibits the secretion of FSH? 37) A) inhibin B) ICSH C) ACTH D) testosterone 38) During the secretory phase of the menstrual cycle. 38) A) LH reaches its highest levels B) the Graafian follicle forms C) estrogen reaches its highest levels D) progesterone levels are at their highest 39) Select the correct statement about the uterine cycle. 39) A) The menstrual phase of the cycle is from day 1 to day 8. B) If fertilization occurs, the corpus luteum is maintained by a hormone secreted by the developing embryo. C) During the proliferative phase, levels of progesterone rise as the follicle begins to produce more hormone. D) During the secretory phase, estrogen levels are at their highest. 40) Which of the following statements is true concerning the mammary glands of both males and females? A) All lumps identified in breast tissue are malignant. B) The mammary glands are modified sweat glands that are actually part of the integumentary system. C) Both sexes are equally prone to breast cancer. D) The only time hormones target breast tissue is during pregnancy and lactation. 40) 4
41) Normally menstruation occurs when. 41) A) blood levels of estrogen and progesterone increase B) blood levels of estrogen and progesterone decrease C) the corpus luteum secretes estrogen D) blood levels of FSH fall off 42) Which of the following will occur after ovulation? 42) A) The secretion of anterior pituitary gonadotropins is enhanced. B) The endometrium enters its secretory phase. C) The corpus luteum secretes estrogen only. D) The corpus luteum prepares to become a corpus albicans. 43) Which hormone is absolutely necessary for ovulation to occur? 43) A) estrogen B) LH C) progesterone D) FSH 44) The brain-testicular axis. 44) A) is the tight relationship between the cortex and the control of testicular function B) involves FSH and LH release C) involves a positive feedback loop control of spermatogenesis D) involves posterior pituitary release of regulating hormones 45) Select the correct statement about testosterone control. 45) 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. 46) Select the correct statement about the hormonal events of the ovarian cycle. 46) A) High estrogen levels result in a surge of LH release. B) Rising levels of estrogen start follicle development. C) The follicle begins to secrete progesterone in response to estrogen stimulation. D) The LH surge stimulates further development of the secondary oocyte. 47) 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) not develop secondary sex characteristics B) be sterile C) have impaired function of interstitial cells D) be impotent (unable to have an erection) 47) 48) Which of the following statements about the female reproductive process is not true? 48) A) The monthly discharge of the uterus (menses) is initiated by the decrease in secretion of female hormones. B) Rebuilding the endometrium is under the control of prolactin. C) Fertilization usually occurs in the fallopian tube. D) Ovulation usually occurs 14 days after the beginning of menses. 5
49) A low secretion of luteinizing hormone (LH) in the normal male adult would cause. 49) A) excessive beard growth B) shrinkage of the anterior pituitary gland C) decreased testosterone secretion D) increased spermatogenesis 50) All of the following statements referring to the uterine cycle are true except. 50) A) FSH and LH directly promote development of the uterine endometrium B) the corpus luteum is formed from the ruptured follicle after ovulation C) estrogen is secreted by the developing follicle in the follicular phase of the cycle D) a decrease in the levels of ovarian hormones signals menstruation 6