RBE LEC exam questions and answers
1. The ductus deferens develops from the _____ of the embryo
a. mesonephric duct
b. paramesonephric duct
c. phallus
d. labioscrotal folds
e. urogenital folds - ANSWER>>a. mesonephric duct
2. The protein that clots and causes the stickiness of the semen is
a. Seminogelin
b. prostaglandin
c. fibrin
d. phosphodiesterase
e. serine protease - ANSWER>>a. Seminogelin
3. The expulsion of semen occurs when the bulbospongiosus muscle is stimulated
by
a. Somatic efferent neurons
b. somatic afferent neurons
c. symphatetic efferent neurons
d. parasymphatetic efferent neurons
e. prostagladins - ANSWER>>a. Somatic efferent neurons
4. Prior to ejaculation, sperm are stored primarily in
a. seminiferous tubules
b. cavernous spaces
c. epididymis
d. seminal vesicles - ANSWER>>c. epididymis
5. The penis is attached to the pubic arch by crura of
,a. the corpora cavernosa.
b. the corpus spongiosum.
c. the perineal membrane.
d. the bulbospongiosus.
e. the ischiocavernosus. - ANSWER>>a. the corpora cavernosa.
6. The first hormone secreted at the onset of puberty is
a. follicle-stimulating hormone
b. interstitial cell-stimulating hormone
c. human chorionic gonadotropin
d. Gonadotropin-releasing hormone
e. testosterone - ANSWER>>d. Gonadotropin-releasing hormone
7. When it is necessary to reduce sperm production without reducing
testosterone secretion, the sustentacular cells secrete
a. dihydrotestosterone
b. androgen-binding protein
c. LH
d. FSH
e. inhibin - ANSWER>>e. inhibin
8. Four spermatozoa arise from each
a. primordial germ cell
b. type A spermatogonium
c. type B spermatogonium
d. secondary spermocyte
e. spermatid - ANSWER>>c. type B spermatogonium
9. The point in meiosis at which sister chromatids sperate from each other is
a. prophase I
b. metaphase I
c. anaphase I
d. anaphase II
,e. telophase II - ANSWER>>d. anaphase II
10. Blood is forced out of the penile lacunae by contraction of the __ mucles.
a. bulbospongiosus muscle
b. ischiovavernosus muscle
c. cremaster
d. trabecular muscles
e. dartos muscle - ANSWER>>d. trabecular muscles
11. Of the following organs, the one(s) most comparable to the penis in structure
is/are:
a. The Clitoris
b. the vagina
c. the vestibular bulbs
d. the labia minora
e. the prepuce - ANSWER>>a. The Clitoris
12. The ovaries secrete all of the following except:
a. estrogen
b. progesterone
c. androgens
d. Follicle-stimulating hormone
e. inhibin - ANSWER>>d. Follicle-stimulating hormone
13. The first haploid stage in oogenesis is
A. the oogonium
B. the primary oocyte
C. the secondary oocyte
D. the second polar body
E. the zygote - ANSWER>>C. the secondary oocyte
14. The secondary oocyte is shielded from immune attack by
, A. the zona pellucida
B. the theca folliculi
C. the cumulus oophorus
D. follicular fluid
E. inhibin - ANSWER>>A. the zona pellucida
15. The hormone that most directly influences the secretory phase of the
menstrual cycle is
A. HCG
B. FSH
C. LH
D. estrogen
E. progesterone - ANSWER>>D. estrogen
16. The ischemic phase of the uterus results from
a. rising progesterone levels.
b. decreasing progesterone levels.
c. stimulation by oxytocin.
d. stimulation by prostaglandins.
e. stimulation by estrogens. - ANSWER>>b. decreasing progesterone levels.
17. Before secreting milk, the mammary glands secrete
a. prolactin
b. colostrum
c. tochia
d. meconlum
e. Chloasma - ANSWER>>b. colostrum
18. One is less likely to become pregnant while nursing than at other times
because __________ inhibit(s) GnRH secretion.
a. FSH
b. prolactin
c. prostaglandins
1. The ductus deferens develops from the _____ of the embryo
a. mesonephric duct
b. paramesonephric duct
c. phallus
d. labioscrotal folds
e. urogenital folds - ANSWER>>a. mesonephric duct
2. The protein that clots and causes the stickiness of the semen is
a. Seminogelin
b. prostaglandin
c. fibrin
d. phosphodiesterase
e. serine protease - ANSWER>>a. Seminogelin
3. The expulsion of semen occurs when the bulbospongiosus muscle is stimulated
by
a. Somatic efferent neurons
b. somatic afferent neurons
c. symphatetic efferent neurons
d. parasymphatetic efferent neurons
e. prostagladins - ANSWER>>a. Somatic efferent neurons
4. Prior to ejaculation, sperm are stored primarily in
a. seminiferous tubules
b. cavernous spaces
c. epididymis
d. seminal vesicles - ANSWER>>c. epididymis
5. The penis is attached to the pubic arch by crura of
,a. the corpora cavernosa.
b. the corpus spongiosum.
c. the perineal membrane.
d. the bulbospongiosus.
e. the ischiocavernosus. - ANSWER>>a. the corpora cavernosa.
6. The first hormone secreted at the onset of puberty is
a. follicle-stimulating hormone
b. interstitial cell-stimulating hormone
c. human chorionic gonadotropin
d. Gonadotropin-releasing hormone
e. testosterone - ANSWER>>d. Gonadotropin-releasing hormone
7. When it is necessary to reduce sperm production without reducing
testosterone secretion, the sustentacular cells secrete
a. dihydrotestosterone
b. androgen-binding protein
c. LH
d. FSH
e. inhibin - ANSWER>>e. inhibin
8. Four spermatozoa arise from each
a. primordial germ cell
b. type A spermatogonium
c. type B spermatogonium
d. secondary spermocyte
e. spermatid - ANSWER>>c. type B spermatogonium
9. The point in meiosis at which sister chromatids sperate from each other is
a. prophase I
b. metaphase I
c. anaphase I
d. anaphase II
,e. telophase II - ANSWER>>d. anaphase II
10. Blood is forced out of the penile lacunae by contraction of the __ mucles.
a. bulbospongiosus muscle
b. ischiovavernosus muscle
c. cremaster
d. trabecular muscles
e. dartos muscle - ANSWER>>d. trabecular muscles
11. Of the following organs, the one(s) most comparable to the penis in structure
is/are:
a. The Clitoris
b. the vagina
c. the vestibular bulbs
d. the labia minora
e. the prepuce - ANSWER>>a. The Clitoris
12. The ovaries secrete all of the following except:
a. estrogen
b. progesterone
c. androgens
d. Follicle-stimulating hormone
e. inhibin - ANSWER>>d. Follicle-stimulating hormone
13. The first haploid stage in oogenesis is
A. the oogonium
B. the primary oocyte
C. the secondary oocyte
D. the second polar body
E. the zygote - ANSWER>>C. the secondary oocyte
14. The secondary oocyte is shielded from immune attack by
, A. the zona pellucida
B. the theca folliculi
C. the cumulus oophorus
D. follicular fluid
E. inhibin - ANSWER>>A. the zona pellucida
15. The hormone that most directly influences the secretory phase of the
menstrual cycle is
A. HCG
B. FSH
C. LH
D. estrogen
E. progesterone - ANSWER>>D. estrogen
16. The ischemic phase of the uterus results from
a. rising progesterone levels.
b. decreasing progesterone levels.
c. stimulation by oxytocin.
d. stimulation by prostaglandins.
e. stimulation by estrogens. - ANSWER>>b. decreasing progesterone levels.
17. Before secreting milk, the mammary glands secrete
a. prolactin
b. colostrum
c. tochia
d. meconlum
e. Chloasma - ANSWER>>b. colostrum
18. One is less likely to become pregnant while nursing than at other times
because __________ inhibit(s) GnRH secretion.
a. FSH
b. prolactin
c. prostaglandins
