How Ejaculation Works: The Male Reproductive Process

Before ejaculation, the penis undergoes major internal changes.

Blood flows into two spongy chambers, causing them to expand.

During emission, sperm travels from the reproductive ducts, mixes with fluids, and enters the urethra, the tube running through the penis.

Now, semen collects in the urethra. Muscles around the base of the penis and pelvic region prepare to contract, building pressure for release.

Then rhythmic muscle contractions push semen through the urethra and out through the opening at the tip of the penis.

This is ejaculation. Behind this process is the nervous system.

Nerve signals coordinate the reproductive muscles, triggering the contractions that make ejaculation possible.

After ejaculation, the penis gradually loses its erection.

This occurs as blood leaves the erectile tissues.

The body begins its recovery period, known as the refractory period.