spermatozoide|Spermatozoa: Anatomy and function,ayna khalaf porno

The term spermatozoa (singular: spermatozoon), also spermatozoideknown as sperm, refers to the male sex cells or gametes. They are formed through the process of spermatogenesis, which begins at puberty with the proliferation。

Sperm Morphology and Ultrastructure. A matuspermatozoidere spermatozoon is a highly differentiated single cell that comprises head, midpiece and tail regions (Fig. 2A) all bounded。

The revolutionary discovery of the presence of spermatozoa in semen was made by Antonie van Leeuwenhoek (1632–1723), who in 1676 sent a letter (published in 1678) to the。

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