Some cells in testis secrete testosterone and the hormone stimulating such cells are released in blood by

Options

A. Seminal vesicles
B. Testis itself
C. Hypothalamus
D. Anterior pituitary

Answer

To solve the question, we need to identify which part of the body releases the hormone that stimulates the cells in the testis to secrete testosterone.

### Step-by-Step Solution:

1. **Identify the Cells in the Testis**:
- The cells in the testis responsible for the secretion of testosterone are called Leydig cells (or interstitial cells).

2. **Understand the Role of Hormones**:
- Leydig cells are stimulated to produce testosterone by a hormone known as Luteinizing Hormone (LH).

3. **Determine the Source of Luteinizing Hormone (LH)**:
- Luteinizing Hormone is produced and released by the anterior pituitary gland, which is controlled by signals from the hypothalamus.

4. **Identify the Correct Answer**:
- The question asks where the hormone that stimulates the Leydig cells is released from. Since LH is released by the anterior pituitary gland, the correct answer is the anterior pituitary.

### Final Answer:
The hormone stimulating the Leydig cells in the testis to secrete testosterone is released into the blood by the **anterior pituitary**.

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