The smooth muscle of the prostate gland contributes to what function?
a. Erection
b. Ejaculation
c. Secretion of prostaglandins and clotting proteins
d. Production of alkaline secretions that neutralize urine
ANS: B
The smooth muscle of the prostate contracts during ejaculation, causing the expulsion of semen from the urethra. Erection occurs when blood fills the sinuses in the penis. The seminal vesicles secrete prostaglandins and clotting proteins. The bulbourethral glands produce an alkaline secretion that coats the interior of the urethra just before ejaculation and neutralizes any acidic urine that might be present.
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