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Deepika Deepika

Class 11th
Biology
2 years ago

What is spermatogenesis? Briefly describe the process of spermatogenesis.

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Abhishek Mishra

2 years ago

Explanation The process by which sperms are produced is called spermatogenesis. It occurs in three stages or phases: a) Multiplication phase. During this phase, the male germ cells or the spermatogonia (diploid) undergo mitotic divisions to produce multiple spermatogonia (diploid). b) Growth phase. The spermatocytes derive nutrition to increase their size to be ready for the first meiotic division. Such spermatocytes are called primary spermatocytes (diploid). c) Maturation phase. During this phase, a primary spermatocyte undergoes its first meiosis to form two equal secondary spermatocytes, containing 23 chromosomes each (haploid). A second meiotic division occurs in the secondary spermatocytes forming four equal spermatids (haploid). 3. Through spermiogenesis, the spermatids develop into sperms. These sperms, or spermatozoa, reach the Sertoli cells only to be expelled, later, from the seminiferous tubules. Final Answer Spermatogenesis is stimulated at puberty by the secretion of the gonadotropins. The luteinizing hormone (LH) is secreted by the anterior pituitary and acts on the Leydig cells to stimulate the secretion of androgens. Follicle stimulating hormone (FSH) also acts on the Sertoli cells to secrete factors which help in spermiogenesis.

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