Transcript Document

What will happen to the penis if the arteries
within the penis dilate?
a. The male becomes impotent.
b. Nitric oxide ceases to be released, and
the penis becomes flaccid.
c. The male attains an erection.
d. The male ejaculates.
© 2012 Pearson Education, Inc.
On a warm day, why will the cremaster
muscle be relaxed?
a. Normal sperm development depends on
the testes being 1.1oC warmer than body
temperature.
b. Healthy levels of testosterone are
maintained by fluctuations of the
cremaster muscle.
c. Normal sperm development depends on
the testes being 1.1oC cooler than body
temperature.
d. Both A and B are correct.
© 2012 Pearson Education, Inc.
Which structures move with the testes during
their descent from the abdomen?
a. testicular artery, spermatic cord, and
seminal vesicles
b. ductus deferens, testicular artery,
lymphatic vessels, and nerves
c. lymphatic vessels, gubernaculum testis,
and a pocket of peritoneal cavity
d. testicular artery, spermatozoa, and
semen
© 2012 Pearson Education, Inc.
Which of the following is NOT a function of
sustentacular cells?
a. maintaining the blood–testis barrier
b. promoting division of spermatogonia
c. producing androgens, particularly
testosterone
d. regulating FSH and GnRH secretion
© 2012 Pearson Education, Inc.
How is the generation of four sperm possible
from one spermatogonium?
a. Meiosis I yields two haploid secondary
spermatocytes, which go through meiosis
II and become four haploid spermatids.
b. The spermatogonium divides four times
during meiosis I.
c. The spermatogonium produces two
primary spermatocytes, which then divide
again in meiosis II.
d. Both A and C are correct.
© 2012 Pearson Education, Inc.
Which layer of the uterus is sloughed off
during menstruation?
a. myometrium
b. basilar zone of the endometrium
c. functional layer of the endometrium
d. perimetrium
© 2012 Pearson Education, Inc.
What event occurs in the uterine cycle when
the levels of estrogens and progesterone
decline?
a. pregnancy
b. menarche
c. menses
d. menopause
© 2012 Pearson Education, Inc.
What is the fate of the corpus luteum if
fertilization does NOT occur?
a. It stimulates ovulation.
b. It initiates development of the tertiary
follicle.
c. It secretes estrogen.
d. It disintegrates into a corpus albicans.
© 2012 Pearson Education, Inc.
Oral contraceptives contain estrogen and
progesterone. What effect does taking oral
contraceptives have on the menstrual cycle?
a. inhibits menstruation
b. inhibits ovulation
c. inhibits PMS
d. inhibits follicular development
© 2012 Pearson Education, Inc.
Why does the level of FSH rise and remain
high during menopause?
a. Estrogen levels decline.
b. The ovaries no longer respond to FSH.
c. It is a result of increased LH levels.
d. It is because GnRH levels increase.
© 2012 Pearson Education, Inc.
Which of the following is a function of the
ovaries?
a. producing an ovum monthly during the
menses
b. shedding the endometrial lining
c. secreting inhibin, which controls FSH
production
d. supporting the developing embryo
© 2012 Pearson Education, Inc.
How is an oocyte transported along the
uterine tube?
a. The fimbriae propel the ovum along the
uterine tube.
b. Ciliary movement “turns on” just before
ovulation to propel the oocyte.
c. Peristaltic contractions of the uterine tube
propel the oocyte.
d. Both B and C are correct.
© 2012 Pearson Education, Inc.
Which of the following is true of oogenesis?
a. Oogonia complete their mitotic divisions
before birth.
b. At puberty, a female has a renewing
source of oogonia.
c. The oocyte is mature at ovulation.
d. Primary oocytes are halted in development
at metaphase of meiosis II until puberty.
© 2012 Pearson Education, Inc.
Why does oogenesis yield only one functional
ovum?
a. When the primary oocyte divides, its
counterpart remains in the outer layer of
the ovary to maintain the supply of oocytes.
b. Oogenesis produces 2 or 3 polar bodies,
which later disintegrate.
c. Cytoplasm is unevenly distributed during
mitosis in the primary oocyte.
d. Both B and C are correct.
© 2012 Pearson Education, Inc.
What changes are observed in the ovarian
cycle if the LH surge does not occur?
a. Premature ovulation occurs, resulting in a
mismatch of ovarian and uterine cycles.
b. No follicular development occurs.
c. Oogenesis does not occur.
d. Completion of meiosis I by the primary
oocyte and ovulation will not occur.
© 2012 Pearson Education, Inc.
Which of the following occurs during the
process of spermiogenesis?
a. Spermatids differentiate into mature
sperm.
b. Primary spermatocytes begin meiosis.
c. Primary spermatocytes give rise to
secondary spermatocytes.
d. All of the above are correct.
© 2012 Pearson Education, Inc.
An inability to contract the ischiocavernosus
and bulbospongiosus muscles impedes which
part(s) of the male sex act?
a. ejaculation
b. orgasm
c. erection
d. both A and B
© 2012 Pearson Education, Inc.
What is a direct effect of low FSH secretion in
males?
a. Secretion of inhibin is promoted.
b. The rate of sperm production decreases.
c. His sex drive declines significantly.
d. The pulses of GnRH from the
hypothalamus develop the female pattern
of release
© 2012 Pearson Education, Inc.
When stem cells called spermatogonia divide,
one differentiates into a primary
spermatocyte. What happens to the second
daughter cell?
a. It undergoes atresia.
b. It secretes testosterone.
c. It continues through the layers of the
seminiferous tubule without
differentiating.
d. It remains in the outer layer of the
seminiferous tubule.
© 2012 Pearson Education, Inc.
In the male reproductive system, the prostate
gland releases an antibiotic called ________.
This protects against urinary tract infections
in the male.
a. fibrinogen
b. prostaglandins
c. fructose
d. seminalplasmin
© 2012 Pearson Education, Inc.
What statement is true with regard to female
anatomy?
a. The uterus is superior to the bladder and
anterior to the rectum.
b. The uterus is suspended by the broad
ligament and attaches to the lateral body
wall.
c. The risk of pelvic inflammatory disease
secondary to STDs is higher in females.
d. All of the above occur.
© 2012 Pearson Education, Inc.
If a male has his prepuce surgically removed,
what has happened to him?
a. He will not be able to maintain an
erection.
b. He will not be able to father children.
c. His prostate has been removed.
d. He has been circumcised.
© 2012 Pearson Education, Inc.
What benefit does the acidic pH of the vagina
provide?
a. enhances sperm motility
b. prevents mucus secretions
c. maintains epithelial lining
d. prevents bacterial, fungal, and parasitic
infections
© 2012 Pearson Education, Inc.
Which statement is true with regard to
spermatogenesis?
a. Spermatogonia differentiate into four
functional spermatozoa in a process
called spermiogenesis.
b. The spermatozoa become motile when
they are within the epididymis.
c. Upon conclusion of spermatogenesis, four
mature gametes are produced.
d. Neither FSH nor testosterone are
required for normal sperm production.
© 2012 Pearson Education, Inc.
Which scenario results in females if GnRH is
absent or it is secreted as a constant rate,
rather than in pulses?
a. The gonadotropes preferentially respond
to FSH.
b. FSH and LH secretion stops within hours.
c. The gonadotropes preferentially respond
to LH.
d. Body hair and fat distribution changes to
that of a male.
© 2012 Pearson Education, Inc.
What effect does blockage of both uterine
tubes by scar tissue (resulting from an STD)
have on a woman’s ability to conceive?
a. It is easier for her to conceive.
b. She becomes sterile.
c. She is likely to have low-birth-weight
babies.
d. There is no effect on conception.
© 2012 Pearson Education, Inc.