Contraction of the Dartos Muscle

Question

Contraction of the dartos muscle
A) tightens the scrotum.
B) produces an erection.
C) propels sperm through the urethra.
D) moves sperm through the ductus deferens.
E) initiates seminal emission.

Accepted Answer

The dartos muscle is a layer of smooth muscle in the scrotum that contracts and relaxes to adjust the position of the testes and tighten or loosen the scrotum. Contraction of the dartos muscle results in tightening of the scrotum, while relaxation causes the scrotum to hang loosely.