Ejaculation

Ejaculation is the discharge of semen (the ejaculate; normally containing sperm) from the male reproductive tract. It is normally linked with orgasm, which involves involuntary contractions of the pelvic floor. It is the final stage and natural objective of male sexual stimulation, and an essential component of natural conception. Ejaculation can occur spontaneously during sleep, and is a normal part of human sexual development (a nocturnal emission or "wet dream"). In rare cases, ejaculation occurs because of prostatic disease. Anejaculation is the condition of being unable to ejaculate. Ejaculation is normally intensely pleasurable for men; dysejaculation is an ejaculation that is painful or uncomfortable. Retrograde ejaculation is the condition where semen travels backwards into the bladder rather than out of the urethra.

This article is about male ejaculation. For the female counterpart, see Female ejaculation. For other uses, see Ejaculation (disambiguation).

Ejaculation
During the emission phase of ejaculation, sperm travels from the epididymis through the vas deferens mixing with fluids from the male accessory glands as it enters the urethra. During the expulsion phase, rhythmic contractions of the pelvic floor and bulbospongiosus muscles push the semen towards the urinary meatus expelling it from the penis in several spurts.
Identifiers
MeSHD004542
TEE1.0.0.0.0.0.10
Anatomical terminology
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