Which of the following cells are responsible for the secretion of the hormone that stimulates muscular growth, growth of facial and axillary hair, aggressiveness, low pitch of voice, etc.in males?

Options

A. Cells which form the lining of seminiferous tubules
B. Cells which provide nutrition to the growing spermatozoa
C. cells situated in the interstitial space of testis
D. Germ cells

Answer

To solve the question regarding which cells are responsible for the secretion of the hormone that stimulates muscular growth, growth of facial and axillary hair, aggressiveness, and low pitch of voice in males, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Hormone in Question**: The hormone responsible for stimulating muscular growth, hair growth, aggressiveness, and low pitch of voice in males is testosterone.

2. **Identify the Source of Testosterone**: Testosterone is primarily produced in the testes, specifically in the interstitial cells.

3. **Identify the Specific Cells**: The specific cells in the testes that produce testosterone are known as Leydig cells (or interstitial cells of Leydig).

4. **Evaluate the Options Given**:
- **Option A**: Cells forming the lining of the seminiferous tubules - These are Sertoli cells, which support sperm development but do not produce testosterone.
- **Option B**: Cells that provide nutrition to growing spermatozoa - Again, these are Sertoli cells, which do not secrete testosterone.
- **Option C**: Cells situated in the interstitial space of the testes - This refers to Leydig cells, which are indeed responsible for testosterone production.
- **Option D**: Any other options that are not relevant to testosterone production.

5. **Select the Correct Answer**: Based on the identification of Leydig cells as the source of testosterone, the correct answer is the cells situated in the interstitial space of the testes.

### Final Answer:
The cells responsible for the secretion of the hormone that stimulates muscular growth, growth of facial and axillary hair, aggressiveness, and low pitch of voice in males are the Leydig cells (interstitial cells of the testes).

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