Which one of the following statement is correct?a)Spermatogenesis is t...
Statement A: Spermatogenesis is the formation of sperm cells.
- Spermatogenesis is the process by which sperm cells are produced in the testes of male animals.
- It involves the differentiation of spermatogonia (germ cells) into sperm cells through a series of mitotic and meiotic divisions.
- This process occurs within the seminiferous tubules of the testes.
Statement B: Spermatogenesis occurs in the seminiferous tubules.
- The seminiferous tubules are the functional units of the testes where spermatogenesis takes place.
- These tubules are lined with specialized cells called Sertoli cells, which support and nourish the developing sperm cells.
- Spermatogenesis involves the sequential development of spermatogonia, spermatocytes, spermatids, and finally mature sperm cells.
Statement C: Follicle-stimulating hormone (FSH) indirectly stimulates spermatogenesis.
- FSH is a hormone released by the pituitary gland in response to signals from the hypothalamus.
- In males, FSH acts on the Sertoli cells within the seminiferous tubules, stimulating them to produce and release various factors that are necessary for spermatogenesis.
- These factors include androgen-binding proteins, inhibin, and various growth factors that support the development and maturation of sperm cells.
Statement D: All of these are correct.
- Both statement A and B are correct as spermatogenesis is the formation of sperm cells, and it occurs in the seminiferous tubules.
- Statement C is also correct as FSH indirectly stimulates spermatogenesis through its actions on the Sertoli cells.
Therefore, the correct answer is D. All of these statements are correct.
Which one of the following statement is correct?a)Spermatogenesis is t...
Explanation:
Spermatogenesis:
- Spermatogenesis is the process of formation and maturation of sperm cells.
- It takes place in the seminiferous tubules of the testes.
Location of Spermatogenesis:
- Spermatogenesis specifically occurs in the seminiferous tubules of the testes, which are coiled structures where sperm cells are produced.
Follicle-Stimulating Hormone (FSH) Role:
- Follicle-Stimulating Hormone (FSH) is a hormone produced by the pituitary gland.
- FSH plays a crucial role in stimulating spermatogenesis indirectly by acting on the Sertoli cells in the testes.
- These cells support and nourish the developing sperm cells, facilitating their maturation.
Correctness of Statements:
- Therefore, all the statements mentioned in the options are correct.
- Spermatogenesis is indeed the formation of sperm cells that occurs in the seminiferous tubules.
- FSH indirectly stimulates spermatogenesis by acting on the Sertoli cells in the testes.
Therefore, the correct answer is option 'D', as all the statements are accurate and relate to the process of spermatogenesis and its regulation.