The cremaster muscles are important to the integrity of the male reproductive system. Which of the following is true about their function?
A) They contract to allow ejaculation.
B) They contract to move the sperm along in the duct.
C) They are responsible for penile erection.
D) They regulate the temperature of the testes.

Question

Quizplus · Accepted Answer

The cremaster muscles are responsible for regulating the temperature of the testes. They do this by contracting or relaxing to bring the testes closer or further away from the body depending on the need for temperature control. They do not directly affect ejaculation or sperm movement, and although they are part of the male reproductive system, they are not responsible for penile erection.

The Cremaster Muscles Are Important to the Integrity of the Male