Which of the following is not true regarding penile erection?
a. involves dilation of the arterioles supplying the cavernous spaces of the penis.
b. is induced by nitric oxide.
c. involves venous constriction
d. occurs in response to parasympathetic nervous stimulation of the penis.
e. is a higher order brain reflex
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Question 2) Which value related to semen production is correct?
a. average volume ejaculated is 1 ml
b. total sperm count averages about 100 million
c. maximal sperm count is about 400 million
d. semen contains only sperm
e. none of the above
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Question 3) Which is the correct sequence of structures sperm travels through prior to ejaculation?
a. ductus deferens---epididymis---ejaculatory duct---urethra.
b. urethra---ductus deferens---epididymis---ejaculatory duct.
c. epididymis---ductus deferens---ejaculatory duct---urethra.
d. epididymis ---ductus deferens---ejaculatory duct---urethra.
e. ejaculatory duct---ductus deferens---epididymis ---urethra.
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Question 4) Select the structure with the diploid chromosome number.
a. primary spermatocyte
b. secondary oocyte
c. secondary spermatocyte
d. spermatid
e. spermatozoan
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Question 5) Which of the following is not a function of the seminal vesicles?
a. supplying fructose, which serves as the primary energy source for ejaculated sperm.
b. secreting prostaglandins.
c. secreting fibrinogen.
d. secreting an alkaline fluid that neutralizes the acidic vaginal secretions.
e. providing more than half the seminal fluid.
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Question 6) The seminal vesicles
a. store sperm prior to ejaculation.
b. supply fructose to be utilized by the sperm for energy.
c. are pierced by the urethra
d. lubricate the urethra prior to an ejaculation
e. all of these answers.
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Question 7) The prostate gland
a. secretes an alkaline solution that neutralizes the acidic vaginal secretions.
b. secretes mucus for lubrication.
c. provides a site for final maturation for fertility and motility for the spermatozoa.
d. contains portions of the ductus deferens.
e. supplies fructose utilized by the sperm for energy.
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Question 8) The prostate gland
a. secretes prostaglandins.
b. supplies fructose, which is utilized by the sperm for energy production.
c. secretes an alkaline medium that is important to neutralize acidic vaginal secretions.
d. both (a) and (c) above.
e. all of these answers.
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Question 9) Which structure secretes lubricating fluid prior to ejaculation?
a. vas deferens.
b. epididymis
c. seminal vesicles.
d. prostate gland.
e. bulbo-urethral glands
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Question 10) Inhibin
a. is produced by the Sertoli cells.
b. is produced by the developing sperm cells.
c. signals the pituitary gland.
d. both (a) and (c) above.
e. both (b) and (c) above.
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