Testes make small cells {sperm}| with nuclei and tails and many mitochondria. Male potency peaks in late adolescence. Sertoli cells kill bad sperm.
Fish spread sperm {milt}| over laid eggs.
Male germ cells develop to make spherical cells {spermatid} {spermatogenesis}. Spermatids mature into sperm having head with cell nucleus, neck with mitochondria for energy, and tail.
Spermatids mature into sperm, with enzyme pouches {acrosome} at tips. Acrosomes break corona radiata.
4-Zoology-Organ-Reproduction-Male
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Date Modified: 2022.0225