DOES THE FORESKIN HAVE MUSCLES?
Yes. The foreskin, like the rest of the penile skin system and scrotum, is lined with the dartos muscle sheet. It is also called the peripenic muscle because it wraps around (peri) the penis (-penic). This remarkably powerful muscle is composed of smooth muscle fibers that run parallel to the shaft of the penis. The dartos muscle is involuntary and highly responsive. It contracts and relaxes in response to touch, temperature, and sexual excitement.
The dartos muscle is always in a state of tonus, or partial contraction—a condition of tension or readiness to contract or relax. The contractions of the dartos muscle are slow, sustained, and may produce great force, such as in cold temperatures.