It is necessary for the testes to be kept below body temperature for abundant, viable sperm formation. |
TRUE |
The prostate atrophies as a man ages, and it usually causes no health problems. |
FALSE |
When it is cold, the scrotum is pulled away from the body. |
FALSE |
When a couple is having difficulty conceiving a child, it is necessary to investigate the sperm of the male. |
TRUE |
The amount of testosterone and sperm produced by the testes is dependent on the influence of FSH alone. |
FALSE |
Ovarian follicles contain mature eggs. |
FALSE |
Sexually transmitted infections are the most important cause of reproductive disorders. |
TRUE |
The testis is divided into seminiferous tubules which contain the lobules that produce sperm and the ejaculatory duct that allows the sperm to be ejected from the body. |
FALSE |
The smaller cell produced by oogenesis meiosis I, called the first polar body, is essentially a packet of discarded nuclear material. |
TRUE |
Pain during ovulation is called dysmenorrhea. |
FALSE |
A human egg or sperm contains 23 pairs of chromosomes. |
FALSE |
The Pap smear is a test to detect cancerous changes in cells of the cervix. |
TRUE |
The adenohypophyseal hormone that triggers ovulation is estrogen. |
FALSE |
The male urethra serves the urinary system only. |
FALSE |
Both tetrads and crossovers are seen during meiosis. |
TRUE |
Failure to attain erection is called impotence. |
TRUE |
Ovulation occurs near the end of the ovarian cycle. |
FALSE |
The corpus luteum secretes progesterone only. |
FALSE |
Female orgasm is required for conception. |
FALSE |
The first sign of puberty in females is budding breasts. |
TRUE |
The primary function of the testes is to produce testosterone. |
FALSE |
The stage in meiosis where chromosomal exchange takes place is telophase. |
FALSE |
The testes are innervated by the sympathetic division of the ANS only. |
FALSE |
The soft mucosal lining of the uterus is the endometrium. |
TRUE |
A scrotal muscle that contracts in response to cold environmental temperature is the cremaster. |
TRUE |
The secretions of the bulbourethral glands neutralize traces of acidic urine in the urethra and serve as a lubricant during sexual intercourse. |
TRUE |
The zona pellucida is formed as the follicle becomes a secondary follicle. |
TRUE |
The molecule that enhances the ability of testosterone to promote spermatogenesis is inhibin |
FALSE |
Sperm are ejaculated from the corpora cavernosa of the penis. |
FALSE |
Sperm from the male parent determines the sex of the child. |
TRUE |
Extremely stressful physical activity in young females can result in excessive bone mass due to large amounts of estrogen production. |
FALSE |
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? |
B) They regulate the temperature of the testes. |
The ability of sperm cells to move along the ductus deferens is due to ________. |
B) peristaltic contractions |
The ability of a male to ejaculate is due to the action of ________. |
D) the bulbospongiosus muscles |
The most important risk for testicular cancer in young males is ________. |
C) undescended testes |
Which of the following glands are responsible for 70% of the synthesis of semen? |
A) the seminal vesicles |
Which of the following hormones controls the release of anterior pituitary gonadotropins? |
C) GnRH |
The "master switch" for male reproductive development is ________. |
C) the SRY gene |
The primary function of the uterus is to ________. |
D) receive, retain, and nourish a fertilized ovum |
Why is the blood-testis barrier important? |
A) because spermatozoa and developing cells produce surface antigens that are recognized as foreign by the immune system |
The structures that receive the ovulated oocyte, providing a site for fertilization, are called the ________. |
B) fallopian tubes |
If gametes were diploid like somatic cells, how many chromosomes would the zygote contain? |
A) twice the diploid number, and with every succeeding generation, the chromosome number would continue to double and normal development could not occur |
Human egg and sperm are similar in that ________. |
C) they have the same number of chromosomes |
The constancy of the chromosome number from one cell generation to the next is maintained through ________. |
B) meiosis |
Fertilization generally occurs in the ________. |
D) fallopian tubes |
Spermiogenesis involves the ________. |
C) formation of a functional sperm by the stripping away of superfluous cytoplasm |
Which of the following female structures is homologous to the male scrotum? |
A) labia majora |
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 ________. |
B) identical |
How do the testes respond to exposure to excessive body warmth? |
B) They move away from the pelvic cavity. |
Effects of estrogen include ________. |
C) growth of the breasts at puberty |
Secretion of progesterone stimulates ________. |
B) preparation of the mammary glands for lactation |
Which of the following statements about sperm is not true? |
D) The sperm midpiece consists of mitochondria spiraled tightly around the contractile filaments of the tail. |
The cells that produce testosterone in the testis are called ________. |
D) interstitial endocrine cells |
The testicular cells that construct the blood-testis barrier are the ________. |
C) sustentocytes |
Which of the following occurs as a result of undescended testes? |
C) Inadequate or nonviable sperm will be produced. |
Erection of the penis results from ________. |
D) a parasympathetic reflex |
Which is not a part of the proliferative phase of the female menstrual cycle? |
C) corpus luteum |
Which of the choices below is not a function of the vagina? |
A) serves as a passageway for the primary oocyte |
Select the correct statement about male sexual response. |
B) Erection is the result of vascular spaces in the erectile tissues filling with blood. |
Which of the choices below is not a function of testosterone? |
D) stimulates mammary gland development |
Which male hormone inhibits the secretion of FSH? |
B) inhibin |
During the secretory phase of the menstrual cycle ________. |
B) progesterone levels are at their highest |
Select the correct statement about the uterine cycle. |
D) If fertilization occurs, the corpus luteum is maintained by a hormone secreted by the developing embryo. |
Which of the choices below is not a part of the hypothalamic-pituitary-gonadal axis? |
C) thalamus |
Which of the following statements is true concerning the mammary glands of both males and females? |
D) The mammary glands are modified sweat glands that are actually part of the integumentary system. |
Normally menstruation occurs when ________. |
B) blood levels of estrogen and progesterone decrease |
The basic difference between spermatogenesis and oogenesis is that ________. |
C) in oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced from the parent cell |
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? |
C) The first polar body has also divided to produce two polar bodies. |
Which of the following will occur after ovulation? |
B) The endometrium enters its secretory phase. |
Why doesn’t semen enter the urinary bladder during ejaculation? |
C) The smooth muscle sphincter at the base of the urinary bladder closes. |
Spermatogenesis ________. |
B) involves a kind of cell division limited to the gametes |
Which hormone is absolutely necessary for ovulation to occur? |
A) LH |
The hypothalamic-pituitary-gonadal axis ________. |
B) involves FSH and LH release |
Select the correct statement about testosterone control. |
A) GnRH from the hypothalamus causes FSH and LH release from the anterior pituitary. |
Which of the following is a correct statement about uterine tubes? |
B) The infundibulum is the funnel-shaped region near the ovary. |
Select the correct statement about the hormonal events of the ovarian cycle. |
B) High estrogen levels result in a surge of LH release. |
Which of these statements about sexually transmitted infections is false? |
C) Syphilis is caused by a virus that may lead to death if untreated. |
Which of the following statements about spermatogenesis is not true? |
D) Each spermatid forms two sperm. |
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 unable to produce viable sperm |
Which of the following statements about the female reproductive process is not true? |
C) Rebuilding the endometrium is under the control of prolactin. |
A low secretion of luteinizing hormone (LH) in the normal male adult would cause ________. |
A) decreased testosterone secretion |
All of the following statements referring to the uterine cycle are true except ________. |
A) FSH and LH directly promote development of the uterine endometrium |
Which of the following phases or processes in the monthly reproductive cycle of the female occur simultaneously? |
D) regression of the corpus luteum and a decrease in ovarian progesterone secretion |
The duct system of the male reproductive system includes all but which of the following? |
D) corpus spongiosum |
Prostate cancer is ________. |
B) sometimes a slow-growing cancer that may never represent a threat to the patient |
The ________ plexus of testicular veins assists in cooling the testis. |
pampiniform |
Surgical cutting of the ductus deferens as a form of birth control is called a(n) ________. |
vasectomy |
The erectile tissue around the urethra is the corpus ________. |
spongiosum |
The midpiece of the sperm tail contains mostly ________. |
mitochondria |
The ________ of the testis nourish the newly formed sperm cells. |
sustenocytes |
The suspensory ligament and mesovarium are part of the ________ ligament. |
broad |
A follicle with only a small antrum in it would be classified as a(n) ________ follicle. |
secondary |
The portion of the uterine endometrium that is not sloughed off every month is called the ________. |
stratum basalis |
Treponema pallidum causes the sexually transmitted disease called ________. |
Syphilis |
ch. 27 test 5
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