Which of the following is a neurosecretory part of brain?

Options

A. The hypothalamus
B. The amygdala
C. The optic area
D. The satiety center

Answer

To solve the question "Which of the following is a neurosecretory part of the brain?" we need to evaluate the given options: hypothalamus, amygdala, optic area, and satiety center.

### Step-by-Step Solution:

1. **Understand the term "neurosecretory":**
- Neurosecretory refers to cells or tissues that produce hormones and release them into the bloodstream. These hormones play crucial roles in regulating various physiological processes.

2. **Evaluate the options:**
- **Hypothalamus:**
- The hypothalamus is a small region located at the base of the brain. It is known for its neurosecretory functions, producing and releasing several hormones that control various bodily functions, including temperature regulation, hunger, thirst, sleep, and circadian rhythms. It releases hormones such as corticotrophin-releasing hormone, growth hormone-releasing hormone, and gonadotrophin-releasing hormone.
- **Amygdala:**
- The amygdala is part of the limbic system and is primarily involved in emotions, fear responses, and memory. It does not have neurosecretory functions.
- **Optic area:**
- The optic area is associated with vision and does not have neurosecretory functions.
- **Satiety center:**
- The satiety center is located within the hypothalamus and is involved in regulating food intake. However, it is not a distinct neurosecretory part of the brain on its own.

3. **Identify the correct answer:**
- Based on the evaluation, the hypothalamus is the only structure among the options that is recognized as a neurosecretory part of the brain. Therefore, the correct answer is **option A: hypothalamus**.

### Final Answer:
The neurosecretory part of the brain is the **hypothalamus**.