Spermatogenesis and sperm differentiation are under the control of

Options

A. FSH
B. LH
C. Testosterone
D. Parathyroid hormone

Answer

**Step-by-Step Solution:**

1. **Understanding Spermatogenesis:**
- Spermatogenesis is the process of formation of male gametes (sperm) from primordial germ cells known as spermatogonia.

2. **Role of Spermatogonia:**
- Spermatogonia are diploid cells (2N) that undergo mitotic division to produce primary spermatocytes.

3. **Formation of Primary Spermatocytes:**
- Primary spermatocytes are also diploid (2N) and they undergo the first meiotic division, resulting in secondary spermatocytes.

4. **Formation of Secondary Spermatocytes:**
- Secondary spermatocytes are haploid (1N) and undergo a second meiotic division, which is similar to mitosis, producing spermatids.

5. **Differentiation of Spermatids:**
- Spermatids are non-motile and further differentiate into motile spermatozoa (sperm).

6. **Hormonal Control:**
- The process of spermatogenesis and sperm differentiation is regulated by hormones released from the anterior pituitary gland, specifically:
- Follicle Stimulating Hormone (FSH): It stimulates the process of spermatogenesis.
- Luteinizing Hormone (LH): It acts on Leydig cells to promote testosterone production, which supports spermatogenesis.

7. **Conclusion:**
- Therefore, spermatogenesis and sperm differentiation are under the control of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH).

**Final Answer:**
Spermatogenesis and sperm differentiation are under the control of Follicle Stimulating Hormone (FSH) and Luteinizing Hormone (LH).

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