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Spermatogenesis is an important primary sex characteristics in humans and all other vertebrates .The process is coordinated and controlled under the influence of hormones. It starts with the onset of puberty in humans and thereafter continues. The primordial cells within the embryonic testis which differentiate into spermatogonia are the precursors of the sperms. These are located as in the outer walls of the seminiferous tubules where the process of spermatogenesis proceeds.
a)State the site of action of fsh in the testis and describe the action thereafter or a) Describe the role of LH in spermatogenesis.b) Name the cells and their products which undergo:
i) Mitosis and differentiation
ii) Meiosis I and Meiosis II
During the process of spermatogenesis
c) Name the accessory ducts that the sperms travel through seminiferous tubules to reach the epididymis
Answers (1)
Here are the answers to the following questions:
a) FSH acts on the Sertoli cells present in the seminiferous tubules of the testis. It stimulates these cells to secrete substances that support spermatogenesis and helps in the maturation of sperm cells.
b) Name the cells and their products which undergo:
i) Mitosis and differentiation
Cell: Spermatogonia
Product: Primary spermatocytes
ii) Meiosis I and Meiosis II
Meiosis I
Cell: Primary spermatocyte
Product: Secondary spermatocytes
Meiosis II
Cell: Secondary spermatocytes
Product: Spermatids
c) Name the accessory ducts through which sperms travel from seminiferous tubules to reach epididymis
Rete testis → Vasa efferentia → Epididymis
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