ejaculation

Also known as GO:0042713, sperm ejaculation, ejaculating, cumming

Ejaculation is the discharge of semen (the ejaculate; normally containing sperm) from the penis through the urethra. It is the final stage and natural objective of male sexual stimulation, and an essential component of natural conception. After forming an erection, many men emit pre-ejaculatory fluid during stimulation prior to ejaculating. Ejaculation involves involuntary contractions of the pelvic floor and is normally linked with orgasm. It is a normal part of male human sexual development.

AI overview

Ejaculation is the discharge of semen from the penis, typically containing sperm, and represents the final stage of male sexual stimulation. It is essential for natural reproduction and is a normal part of male sexual development, usually occurring together with orgasm.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Anatomy.Name: Ejaculation
Anatomy.Image: Ejaculation educational seq 4.png
Anatomy.Width: 300
Anatomy.image_size: 300px
Anatomy.Caption: A human male ejaculating

via Wikipedia infobox

Research

22,866 papers

Premature ejaculation: a psychophysiological review.ReviewJournal of sex & marital therapy · 1997Metz ME, Pryor JL, Nesvacil LJ et al.DOI: 10.1080/00926239708404413
Does ejaculation have an effect on urinary flow rates?Neurourology and urodynamics · 2024Erkan Erbay M, Tarhan FDOI: 10.1002/nau.25467
Central nervous system control of ejaculation.ReviewWorld journal of urology · 2005Holstege GDOI: 10.1007/s00345-004-0484-y
Impact of ejaculation frequency on semen parameters and DNA fragmentation: a cross-sectional study.Reproductive biology and endocrinology : RB&E · 2025Xi Q, Kong Q, Lv X et al.DOI: 10.1186/s12958-025-01439-3
Male allocation to ejaculation and mating effort imposes different life history trade-offs.PLoS biology · 2024Chung MJ, Fox RJ, Jennions MDDOI: 10.1371/journal.pbio.3002519
Exploring the impact of sexual positions on ejaculation: Insights from a survey study by the Andrology Working Group of the Society of Urological Surgery in Turkey.Andrology · 2025Gül M, Şahin A, Doğan Ç et al.DOI: 10.1111/andr.13775
A model for the importance of zinc in the dynamics of human sperm chromatin stabilization after ejaculation in relation to sperm DNA vulnerability.ReviewSystems biology in reproductive medicine · 2011Björndahl L, Kvist UDOI: 10.3109/19396368.2010.516306
Effect of repeated semen ejaculation on sperm quality and selected biochemical markers of canine semen.Polish journal of veterinary sciences · 2024Strzeżek R, Lecewicz M, Orzeł I et al.DOI: 10.24425/pjvs.2024.149350

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Wikidata facts

Image: Ejaculation anatomy en.svg

Show 3 more facts

exact match: purl.obolibrary.org/obo/GO_0042713
Unicode character: 𓂺
Commons category: Male ejaculation

Sources (2)

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~15 min read

Article

17 sections

Contents

Phases
Stimulation
Emission phase
Expulsion phase
Refractory period
Volume
Quality
Development
During puberty
Control from the central nervous system
Hands-free ejaculation
Perineum pressing and retrograde ejaculation
Health issues
Other animals
See also
References
Further reading

Ejaculation can occur spontaneously during sleep (a nocturnal emission or "wet dream") or in rare cases because of prostatic disease. Anejaculation is the condition of being unable to ejaculate. Dysejaculation is an ejaculation that is painful or uncomfortable. Retrograde ejaculation is the backward flow of semen from the urethra into the bladder. Premature ejaculation happens shortly after initiating sexual activity, and hinders prolonged sexual intercourse. A vasectomy alters the composition of the ejaculate as a form of birth control.