The function of the cremaster muscle is to
A) squeeze semen from the urethra during ejaculation.
B) maintain erection in both sexes.
C) increase intra-abdominal pressure during childbirth.
D) alter the position of the testes in the scrotal sac with increases in ambient temperature.

Question

Quizplus · Accepted Answer

The cremaster muscle is responsible for altering the position of the testes in the scrotal sac in response to changes in ambient temperature. When the temperature is too high, the muscle contracts, causing the testes to move closer to the body for cooling. When the temperature is too low, the muscle relaxes, allowing the testes to descend away from the body to maintain warmth. The other choices are incorrect as they do not reflect the actual function of the cremaster muscle.

The Function of the Cremaster Muscle Is to