Ejaculation
Updated:Ejaculation is the expulsion of semen from the penis during sexual activity, usually accompanying an orgasm. It occurs when muscles at the base of the penis contract rhythmically, propelling semen through and out of the urethra. Ejaculation is a key part of the male sexual response cycle and serves the biological function of delivering sperm for reproduction.
Additional Information
Ejaculation typically occurs in two stages: emission, where semen collects in the urethra, and expulsion, where muscular contractions force it out of the penis. The process is controlled by the autonomic nervous system. Ejaculation and orgasm usually occur simultaneously in males, but they are separate physiological processes.
The composition of semen includes sperm cells, which are produced in the testes, and fluids from the prostate gland, seminal vesicles, and other glands. These fluids nourish and protect sperm during their journey through the female reproductive tract.
Some common ejaculation-related issues include premature ejaculation, retrograde ejaculation (where semen enters the bladder), and anejaculation (inability to ejaculate). These can have psychological or physiological causes and can often be treated.
Examples
During intercourse, the man experienced an intense orgasm and ejaculated inside his partner.
He noticed his ejaculate had a slightly different consistency and color than usual.