Involuntary contraction of this smooth muscle layer wrinkles and thickens the walls of the scrotum to prevent heat loss.
A) dartos muscle
B) internal spermatic fascia
C) cremaster muscle
D) tunica vaginalis
E) tunica albuginea

Question

Quizplus · Accepted Answer

The dartos muscle is a layer of smooth muscle in the scrotum that contracts to wrinkle and thicken the scrotal skin, helping to regulate temperature by reducing heat loss.

Involuntary Contraction of This Smooth Muscle Layer Wrinkles and Thickens