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 regulate the temperature of the testes.
C) They are responsible for penile erection.
D) They
contract to allow ejaculation.
B
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
3) The ability of a male to ejaculate is due to the action of
________.
A) parasympathetic nerves
B) the dartos muscle
C) luteinizing hormone
D) the bulbospongiosus muscles
D
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
5) Which of the following glands are responsible for 60% of the
synthesis of semen?
A) the seminal vesicles
B) the
bulbourethral glands
C) the prostate
D) the pituitary
A
7) Development of male reproductive structures depends on which of
the following events?
A) that the female hormones are suppressed
during pregnancy
B) the suppression of inhibin
C)
secretion of male hormones prenatally and lasting into the first few
months after birth
D) that human gonadotropin be synthesized in
the first week of the pregnancy
C
7) Development of male reproductive structures depends on which of
the following events?
A) that the female hormones are suppressed
during pregnancy
B) the suppression of inhibin
C)
secretion of male hormones prenatally and lasting into the first few
months after birth
D) that human gonadotropin be synthesized in
the first week of the pregnancy
C
8) The primary function of the uterus is to ________.
A)
protect the ovaries
B) synthesize female hormones
C)
regulate the ovarian and menstrual cycles
D) receive, retain,
and nourish a fertilized ovum
D
9) 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
B) because some blood
contents are toxic to the spermatozoa
C) because immature sperm
cells lose their motility when they encounter any blood component
D) Actually, the blood-testis barrier has no function.
A
10) The structures that receive the ovulated oocyte, providing a site
for fertilization, are called the ________.
A) Graafian
follicles
B) fallopian tubes
C) infundibula
D) fimbriae
B
11) 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
B) triple the
diploid number, and with every succeeding generation, the chromosome
number would continue to triple and normal development would not occur
C) half the diploid number with no change in development
D) There is no relationship between gametes and somatic cells.
A
12) Human egg and sperm are similar in that ________.
A) about
the same number of each is produced per month
B) they have the
same degree of motility
C) they have the same number of
chromosomes
D) they are about the same size
C
13) The constancy of the chromosome number from one cell generation
to the next is maintained through ________.
A) mitosis
B)
meiosis
C) cytokinesis
D) DNA synthesis
B
14) Fertilization generally occurs in the ________.
A) ovary
B) uterus
C) vagina
D) fallopian tubes
D
15) Spermiogenesis involves the ________.
A) formation of four
haploid cells from a spermatogonium
B) movement of sperm in the
female genital tract
C) formation of a functional sperm by the
stripping away of superfluous cytoplasm
D) sequence of events in
the rete testis
C
16) All of the following can be considered male secondary sex
characteristics except the ________.
A) development of body hair
B) lowering of the voice
C) development of testes as
opposed to ovaries
D) increasing mass of the skeleton
C
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) dizygotic
B) identical
C) fraternal
D) of different sexes
B
18) Characteristics of the mature sperm include the ________.
A) presence of two X chromosomes in approximately half the sperm
B) presence of Y chromosomes in approximately half the sperm
C) absence of an acrosome
D) absence of coiled mitochondria
B
19) How do the testes respond to exposure to excessive body warmth?
A) They move close to the pelvic cavity.
B) They move away
from the pelvic cavity.
C) Excessive warmth has no effect on the
testicles because of their location in the scrotum.
D) Excessive
warmth is actually beneficial in that it speeds up the maturation of sperm.
B
20) Effects of estrogen include ________.
A) increased oiliness
of the skin
B) deepening of the voice
C) growth of the
breasts at puberty
D) growth of the larynx
C
21) Secretion of progesterone stimulates ________.
A)
contraction of uterine muscles
B) preparation of the mammary
glands for lactation
C) secretory activity of the uterine
myometrium
D) development of the female secondary sex characteristics
B
22) Which of the following statements about sperm is not true?
A) They contain very little cytoplasm or stored nutrients.
B) They are sluggish in an alkaline environment.
C) The
acrosome is produced by the Golgi apparatus and contains hydrolytic
enzymes.
D) The sperm midpiece consists of mitochondria spiraled
tightly around the contractile filaments of the tail.
B
23) The cells that produce testosterone in the testis are called
________.
A) spermatocytes
B) spermatogonia
C)
sustentacular cells
D) interstitial cells
D
24) The testicular cells that construct the blood-testis barrier are
the ________.
A) spermatocytes
B) spermatogonia
C)
sustentacular cells
D) interstitial cells
C
25) Which of the following occurs as a result of undescended testes?
A) Male sex hormones will not be circulated in the body.
B) Sperm will have no means of exit from the body.
C)
Inadequate or nonviable sperm will be produced.
D) Inadequate
blood supply will retard the development of the testes.
C
26) 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
D) a parasympathetic reflex
D
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
28) Which of the choices below is not a function of the vagina?
A) serves as a passageway for the primary oocyte
B) serves
as a passageway for menstrual flow
C) is the birth canal
D) receives semen from the penis during sexual intercourse
A
29) Select the correct statement about male sexual response.
A)
Sympathetic impulses are responsible for causing penile arteriolar
dilation, resulting in erection.
B) Erection is the result of
vascular spaces in the erectile tissues filling with blood.
C)
Expansion of the penile tissues results in dilation of the venous
outflow.
D) Ejaculation is the result of parasympathetic stimulation.
B
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
31) Which male hormone inhibits the secretion of FSH?
A) ACTH
B) inhibin
C) ICSH
D) testosterone
B
32) During the secretory phase of the menstrual cycle ________.
A) LH reaches its highest levels
B) progesterone levels
are at their highest
C) estrogen reaches its highest levels
D) the Graafian follicle forms
B
33) Select the correct statement about the uterine cycle.
A)
The menstrual phase of the cycle is 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.
D) If
fertilization occurs, the corpus luteum is maintained by a hormone
secreted by the developing embryo.
D
34) Which of the choices below is not a part of the brain-testicular
axis?
A) hypothalamus
B) anterior pituitary gland
C)
thalamus
D) testes
C
35) Which of the following statements is true concerning the mammary
glands of both males and females?
A) Both sexes are equally
prone to breast cancer.
B) All lumps identified in breast tissue
are malignant.
C) The only time hormones target breast tissue is
during pregnancy and lactation.
D) The mammary glands are
modified sweat glands that are actually part of the integumentary system.
D
36) Normally menstruation occurs when ________.
A) blood levels
of FSH fall off
B) blood levels of estrogen and progesterone
decrease
C) blood levels of estrogen and progesterone increase
D) the corpus luteum secretes estrogen
B
37) 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
C) in oogenesis, one mature ovum is produced, and in
spermatogenesis four mature sperm are produced from the parent cell
D) spermatogenesis involves mitosis and meiosis, but oogenesis
involves meiosis only
C
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) There were originally four polar
bodies and one disappeared.
B) One is an undeveloped primary
oocyte that failed to mature.
C) The first polar body has also
divided to produce two polar bodies.
D) What you really see are
two polar bodies and the sperm that will fertilize the egg.
C
39) Which of the following will occur after ovulation?
A) The
corpus luteum secretes estrogen only.
B) The endometrium enters
its secretory phase.
C) The secretion of anterior pituitary
gonadotropins is enhanced.
D) The corpus luteum prepares to
become a corpus albicans.
B
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) There is no urge to urinate during sexual
intercourse because of the suppression of LH by testosterone buildup
in the blood.
C) The smooth muscle sphincter at the base of the
urinary bladder closes.
D) Ejaculation is a parasympathetic
reflex resulting in no response by urinary contraction muscles.
C
41) Spermatogenesis ________.
A) is the process of releasing
mature sperm cells into the lumen of the seminiferous tubule
B)
involves a kind of cell division limited to the gametes
C)
results in the formation of diploid cells
D) uses mitosis to
produce gamete cells
B
42) Which hormone is absolutely necessary for ovulation to occur?
A) LH
B) FSH
C) progesterone
D) estrogen
A
43) The brain-testicular axis ________.
A) is the tight
relationship between the cortex and the control of testicular function
B) involves FSH and LH release
C) involves posterior
pituitary release of regulating hormones
D) involves a positive
feedback loop control of spermatogenesis
B
44) Select the correct statement about testosterone control.
A)
GnRH from the hypothalamus causes FSH and LH release from the anterior
pituitary.
B) FSH stimulates testicular production of
testosterone.
C) Inhibin and testosterone exert positive
feedback on the hypothalamus and pituitary.
D) The pineal gland
is believed to be the gland that exerts the most influence in
testosterone control.
A
45) Which of the following is a correct statement about uterine
tubes?
A) The ampulla is the narrow constricted region.
B)
The infundibulum is the funnel-shaped region near the ovary.
C)
The isthmus is the normal site of fertilization.
D) The
mesometrium supports the uterine tubes along their entire length.
B
46) Select the correct statement about the hormonal events of the
ovarian cycle.
A) Rising levels of estrogen start follicle
development.
B) High estrogen levels result in a surge of LH
release.
C) The follicle begins to secrete progesterone in
response to estrogen stimulation.
D) The LH surge stimulates
further development of the secondary oocyte.
B
47) Which of these statements about sexually transmitted infections
is false?
A) Chlamydia is caused by bacteria that can often be
asymptomatic or bring on a wide variety of symptoms.
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) Genital herpes is caused by a
virus that may cause intermittent lesions.
C
48) Which of the following statements about spermatogenesis is not
true?
A) The spermatogonium forms the primary spermatocyte.
B) The primary spermatocyte forms two secondary spermatocytes.
C) The secondary spermatocytes each form two spermatids.
D) Each spermatid forms two sperm.
D
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) be impotent (unable to have an erection)
D) have impaired function of interstitial cells
A
50) Which of the following statements about the female reproductive
process is not true?
A) Fertilization usually occurs in the
fallopian tube.
B) Ovulation usually occurs 14 days after the
beginning of menses.
C) Rebuilding the endometrium is under the
control of prolactin.
D) The monthly discharge of the uterus
(menses) is initiated by the decrease in secretion of female hormones.
C
51) A low secretion of luteinizing hormone (LH) in the normal male
adult would cause ________.
A) decreased testosterone secretion
B) excessive beard growth
C) increased spermatogenesis
D) shrinkage of the anterior pituitary gland
A
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) estrogen is secreted
by the developing follicle in the follicular phase of the cycle
C) the corpus luteum is formed from the ruptured follicle after
ovulation
D) a decrease in the levels of ovarian hormones
signals menstruation
A
3) Which of the following phases or processes in the monthly
reproductive cycle of the female occur simultaneously?
A)
maximal LH secretion and menstruation
B) maximal steroid
secretion by the corpus luteum and menstruation
C) early
follicular development and the secretory phase in the uterus
D)
regression of the corpus luteum and a decrease in ovarian progesterone secretion
D
54) The duct system of the male reproductive system does not include
the ________.
A) epididymis
B) urethra
C) ductus
deferens
D) corpus spongiosum
D
55) An ovulating oocyte is actually activated by hormones about
________ days before ovulation.
A) 14
B) 28
C) 85
D) 110
D
56) Prostate cancer is _______.
A) the number-one cause of
death in men
B) sometimes a slow-growing cancer that may never
represent a threat to the patient
C) most common in Asians
D) often the result of a distortion of the urethra
B