Choose the wrong statement

Options

A. Somatostatin secreted by hypothalamus stimulates secretion of somatotrophic hormone
B. Pars intermedia secretes melanocyte stimulating hormone
C. In human, pars intermedia is almost merged with pars distalis.
D. Corpus luteum is formed from remnants of Graafian follicle after ovulation

Answer

To solve the question "Choose the wrong statement," we will analyze each of the four statements provided and identify the incorrect one.

### Step-by-Step Solution:

1. **Analyze the First Statement:**
- The first statement claims that "somatostatin secreted by hypothalamus stimulates secretion of somatotrophic hormone."
- **Evaluation:** Somatostatin is known as the growth hormone-inhibiting hormone. It is secreted by the hypothalamus and acts on the pituitary gland to inhibit the secretion of growth hormone (somatotropic hormone), not stimulate it.
- **Conclusion:** This statement is incorrect.

2. **Analyze the Second Statement:**
- The second statement says "pars intermedia secretes melanocyte stimulating hormone."
- **Evaluation:** The pars intermedia is indeed a part of the pituitary gland and is responsible for secreting melanocyte-stimulating hormone (MSH), which affects skin pigmentation.
- **Conclusion:** This statement is correct.

3. **Analyze the Third Statement:**
- The third statement states "in humans, pars intermedia is almost merged with pars distalis."
- **Evaluation:** In humans, the pars intermedia is indeed closely associated with the pars distalis of the pituitary gland, often appearing merged.
- **Conclusion:** This statement is correct.

4. **Analyze the Fourth Statement:**
- The fourth statement claims "corpus luteum is formed from remnants of graphene follicle after ovulation."
- **Evaluation:** The corpus luteum is formed from the remnants of the Graafian follicle (mature ovarian follicle) after ovulation. If fertilization does not occur, the corpus luteum degenerates.
- **Conclusion:** This statement is correct.

### Final Conclusion:
After analyzing all four statements, we find that the first statement is the only incorrect one. Therefore, the answer to the question "Choose the wrong statement" is the first statement.