Spermatogenesis is influenced by

Options

A. (a) Progesterone
B. (b) FSH
C. (c) TSH
D. (d) LTH

Answer

**Step-by-Step Solution:**

1. **Understanding Spermatogenesis**: Spermatogenesis is the biological process through which sperm cells (male gametes) are produced in males. This process occurs primarily in the testes, specifically within the Sertoli cells.

2. **Identifying Influencing Factors**: Several hormones play a crucial role in regulating spermatogenesis. The primary hormones involved are:
- **Follicle Stimulating Hormone (FSH)**: This hormone stimulates the Sertoli cells to support the development of sperm.
- **Luteinizing Hormone (LH)**: This hormone stimulates the Leydig cells to produce testosterone.
- **Testosterone**: This male sex hormone is essential for the maturation of sperm cells.

3. **Analyzing the Options**: The question provides several options to identify which hormone influences spermatogenesis:
- **Option A: Progesterone**: This hormone is primarily involved in female reproductive processes and does not influence spermatogenesis. Therefore, it is incorrect.
- **Option B: FSH**: This hormone is directly involved in stimulating spermatogenesis. Thus, this option is correct.
- **Option C: TSH (Thyroid Stimulating Hormone)**: This hormone regulates thyroid function and metabolism, not spermatogenesis. Hence, it is incorrect.
- **Option D: LTH (Luteotropic Hormone)**: Also known as prolactin, this hormone is more relevant to female lactation and does not influence spermatogenesis. Therefore, it is incorrect.

4. **Conclusion**: The hormone that influences spermatogenesis is FSH. Thus, the correct answer is Option B.

**Final Answer**: B) FSH

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