The ……………X……………cells of testes, which are present inside the seminiferous tubule of testes synthesize and secretes …………Y…………. hormones .
Choose the correct option for X and Y.

Options

A. X : Leyding , Y : Androgens
B. X : Interstitial , Y : Testicular
C. X : Sertoli , Y : Inhibin B
D. Both (a) and (b)

Answer

To solve the question, we need to identify the correct cells (X) present inside the seminiferous tubules of the testes and the hormones (Y) they synthesize and secrete.

### Step-by-Step Solution:

1. **Identify the Cells in the Seminiferous Tubules**:
- The seminiferous tubules are located within the testicular lobules and are responsible for the production of sperm.
- There are two main types of cells found within the seminiferous tubules:
- **Spermatogonia**: These are the male germ cells that develop into sperm.
- **Sertoli Cells**: These cells are also known as nurse cells and play a crucial role in supporting and nourishing the developing sperm cells.

2. **Determine the Function of Sertoli Cells**:
- Sertoli cells provide nourishment to the spermatozoa and are essential for the process of spermatogenesis.
- They also secrete hormones that are important for regulating male reproductive functions.

3. **Identify the Hormones Secreted by Sertoli Cells**:
- The primary hormone secreted by Sertoli cells is **Inhibin-B**. This hormone helps regulate the production of sperm and inhibits the secretion of follicle-stimulating hormone (FSH).
- Sertoli cells also produce **Anti-Müllerian Hormone (AMH)**, which is important during male development.

4. **Conclude the Correct Options for X and Y**:
- Based on the information gathered:
- X (the cells) = **Sertoli Cells**
- Y (the hormone) = **Inhibin-B**

Thus, the complete statement is: The **Sertoli cells** of testes, which are present inside the seminiferous tubule of testes, synthesize and secrete **Inhibin-B** hormones.

### Final Answer:
- X: Sertoli Cells
- Y: Inhibin-B

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