Which of the following pair is correct ?

Options

A. Testosterone – Secreted by Sertoli cells
B. FSH – Secreted by Leydig cells
C. ABP – Concentrates the testosterone
D. ICSH – Stimulates the leydig cells to secrete FSH

Answer

To determine which of the following pairs is correct, we need to analyze each option provided in the question based on our knowledge of human reproduction and hormonal functions.

### Step-by-Step Solution:

1. **Understanding Hormonal Functions**:
- Testosterone is a hormone primarily produced in the testes.
- Sertoli cells are responsible for nurturing sperm cells and do not secrete testosterone.
- Leydig cells (not Laedic) are the cells responsible for the production of testosterone.

2. **Analyzing Each Option**:
- **Option 1**: "Testosterone secreted by Sertoli cells" - **Incorrect**. Sertoli cells do not secrete testosterone; Leydig cells do.
- **Option 2**: "FSH is secreted by Laedic cells" - **Incorrect**. Follicle Stimulating Hormone (FSH) is secreted by the anterior pituitary gland, not by Leydig cells.
- **Option 3**: "FSH is secreted by Pituitary cells" - **Correct**. FSH is indeed secreted by the anterior pituitary gland.
- **Option 4**: "Androgen Binding Protein" - This statement is incomplete, but it refers to a protein that binds androgens, primarily produced by Sertoli cells.
- **Options 5-10**: These options appear to be repetitive and lack context or clarity.

3. **Conclusion**:
- The only correct pair from the options provided is **Option 3**: "FSH is secreted by Pituitary cells".

### Final Answer:
The correct pair is **Option 3: FSH is secreted by Pituitary cells**.

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