Chapter 27 Quiz

Chapter 27 quiz 1) Stem cell. A 2) First cells with n number of chromosomes. D 3) Type B spermatogonia. B Chapter 27 quiz 4) Acrosome. B 5) Location of mitochondria. A 6) Midpiece. A 7) Location of nucleus C 8) Area of compacted DNA. C 9)Flagellum. D Chapter 27 quiz 10) The stage called ovulation. E 11) Vesicular (Graafian) follicle. C 12) Primary follicles. B 13) Primordial follicle. A 14) Corpus luteum. D 15) Mature follicle. C . Multiple choice: 16) All but one of the following statements is true with regard to the blood testis barrier. Select the one statement that is false. A) Sustentocytes form the barrier with tight junctions. B) The barrier separates the spermatocytes dividing by meiosis from exposing their unique antigens to the immune system. C) The barrier marks the border between the basal compartment and the adluminal compartment. 17) All but one of the following statements is true of uterine function. Select the statement that is not true of uterine function. A) The myometrium contracts to expel the fetus during child birth. B) The endometrium has a functional layer that the embryo will implant into. C) Its rhythmic, reverse peristalsis can propel sperm toward the egg. Chapter 27 quiz 18) 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. C) They are responsible for penile erection. D) They contract to allow ejaculation. 19) The ability of sperm cells to move along the ductus deferens is due to ________. A) gravity C) enzymatic activity D) hormonal action 20) Which of the following glands are responsible for 70% of the synthesis of semen? B) the bulbourethral glands C) the prostate D) the pituitary 21) Which of the following hormones controls the release of anterior pituitary gonadotropins? A) LH B) FSH D) testosterone 22) The structures that receive the ovulated oocyte, providing a site for fertilization, are called the ________. A) Graafian follicles C) infundibula D) fimbriae 23) The constancy of the chromosome number from one cell generation to the next is maintained through ________. A) mitosis C) cytokinesis D) DNA synthesis 24) Which of the following female structures is homologous to the male scrotum? B) labia minora C) clitoris D) vagina Chapter 27 quiz 25) Effects of estrogen include ________. A) increased oiliness of the skin B) deepening of the voice D) growth of the larynx 26) Secretion of progesterone stimulates ________. A) contraction of uterine muscles C) proliferation of the uterine myometrium D) development of the female secondary sex characteristics 27) The cells that produce testosterone in the testis are called ________. A) spermatocytes B) spermatogonia C) sustentacular cells 28) Erection of the penis results from ________. A) a sympathetic reflex B) parasympathetic activation of the bulbourethral glands C) dilation of the veins in the penis 29) 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 D) development of endometrial cells 30) Which of the choices below is not a function of the vagina? B) serves as a passageway for menstrual flow C) serves as the birth canal D) receives semen from the penis during sexual intercourse 31) 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 32) Which male hormone inhibits the secretion of FSH? A) ACTH C) ICSH Chapter 27 quiz D) GnRH 33) During the secretory phase of the menstrual cycle ________. A) LH reaches its highest levels C) estrogen reaches its highest levels D) the Graafian follicle forms 34) Select the correct statement about the uterine cycle. A) The menstrual phase of the cycle is normally from day 1 to day 8. B) During the secretory phase, estrogen levels are at their highest. C) During the proliferative phase, levels of progesterone rise as the follicle begins to produce more hormone. 35) The basic difference between spermatogenesis and oogenesis is that ________. A) during spermatogenesis two more polar bodies are produced B) the mature ovum is n, while the sperm is 2n D) spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only 36) Which of the following will occur after ovulation? A) The corpus luteum secretes estrogen only. C) The secretion of anterior pituitary gonadotropins is enhanced. D) The corpus luteum prepares to become a corpus albicans. 37) 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) 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. 38) Which hormone is the necessary trigger for ovulation to occur? B) FSH C) progesterone D) estrogen 39) Which of the following phases or processes in the monthly reproductive cycle of the female occur simultaneously? A) maximal LH secretion and menstruation Chapter 27 quiz B) maximal steroid secretion by the corpus luteum and menstruation C) early follicular development and the secretory phase in the uterus 40) The duct system of the male reproductive system includes all but which of the following? A) epididymis B) urethra C) ductus deferens