ejaculare

Ejaculare is a Latin verb meaning to ejaculate or to discharge. In medical Latin, the related noun is ejaculatio, and in modern usage the English term ejaculatio is usually rendered as ejaculation. The word appears in historical anatomical texts and continues to appear in some scholarly contexts referencing the physiology of male reproductive discharge.

In humans and many mammals, ejaculation is a two-phase process. Emission is driven primarily by the sympathetic nervous system and moves spermatozoa and secretions from the testes, epididymides, vas deferens, seminal vesicles, and prostate into the posterior urethra. Ejaculation proper follows as a spinal reflex mediated by the pudendal nerves (S2–S4), producing rhythmic contractions of pelvic floor muscles that propel semen through the urethra and out of the penis. A sensation commonly described as orgasm typically accompanies this sequence. Although initiation involves conscious arousal, the final expulsion is largely automatic.

Seminal fluid is a mixture of spermatozoa and secretions from the seminal vesicles, prostate, and other glands. Semen volume and sperm metrics vary among individuals, but clinical evaluations often reference a typical range for semen volume around 1.5 to 5 milliliters and sperm concentration within broad normal limits; total sperm count per ejaculate is also assessed in fertility testing.

Clinically, ejaculation is central to male fertility and sexual health. Disorders include retrograde ejaculation, where semen enters the bladder, and anejaculation, in which ejaculation fails to occur. The term has historical and cross-species relevance, with variations in structure and function across different vertebrates.