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What is spermatogenesis?

In: Human Anatomy, Human Physiology, Genetics

Answer:

Spermatogenesis is the development of mature spermatozoa (sperm cells) from spermatogonia; it includes spermatocytogenesis and spermiogenesis.

In the testes there are seminiferous tubules
Seminiferous tubule surrounded by epithelium
On epithelium are SPERMATOGONIA cells
These are diploid cells
Divide by mitosis
Some remain in epithelium as more spermatogonia
However, some move towards middle of tubule
They grow larger and are now called PRIMARY SPERMATOCYTES
They undergo meiosis I to create
SECONDARY SPERMATOCYTES which are haploid
2-3 days later meiosis II occurs to create
SPERMATIDS
These begin to differentiate
They are enveloped by the Sertoli Cells and undergo SPERMIOGENESIS
This gives them their characteristic shape from a round cell to the head and elongated tail. The cytoplasm is remodeled. This creates
SPERMATOZOA

Note: The production of egg cells, the female counterpart to spermatogenesis, is called oogenesis.

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Emdrgreg

First answer by ID2209088555. Last edit by Midge9902. Contributor trust: 16 [recommend contributor ]. Question popularity: 17 [recommend question].

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