genital development in males
Last reviewed 04/2023
Development is as follows:
- stage 1: prepubertal
- stage 2: scrotal enlargement and reddening, testicular enlargement
- stage 3:
- penile lengthening, thinning of the scrotal skin, testicular enlargement
- begins between 10.5 and 14.5 years
- stage 4: glans enlargement, penile broadening, testicular enlargement, scrotal increase in size and deepening of pigmentation
- stage 5: adult
Spermatogenesis is active from the time of penile growth; an ejaculate can be produced from 1 year after its onset.