Which of the following events in the male sex act occurs last and results in ejaculation?

A. Release of secretions from the seminal vesicles and the prostate gland
B. Contractions of skeletal muscle at the base of the penis
C. Semen accumulates in the prostatic urethra
D. Constriction of the internal sphincter of the urinary bladder
E. Peristaltic contractions of the ductus deferens


Answer: B

Anatomy & Physiology

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