Secretion of which of the following is under control of neurosecretory nerve cells?

Options

A. Pineal
B. Adrenal cortex
C. Anterior pitutary
D. Thymus

Explanation

To determine which gland's secretion is under the control of neurosecretory nerve cells, follow these steps:

### Step 1: Understand Neurosecretory Nerve Cells
Neurosecretory nerve cells are specialized neurons that produce and secrete hormones (neurohormones) into the bloodstream. They play a crucial role in the regulation of various endocrine glands.

**Hint:** Remember that neurosecretory cells are primarily located in the hypothalamus.

### Step 2: Identify the Function of Neurosecretory Nerve Cells
These cells release releasing factors or neurohormones that influence the secretion of hormones from the anterior pituitary gland. This means they indirectly control the activity of the anterior pituitary.

**Hint:** Focus on how the hypothalamus communicates with the pituitary gland.

### Step 3: Analyze the Options
- **Option 1: Pineal gland** - This gland is primarily regulated by light and dark cycles, not directly by neurosecretory cells.
- **Option 2: Adrenal cortex** - This gland is mainly regulated by ACTH (Adrenocorticotropic hormone) from the anterior pituitary, not directly by neurosecretory cells.
- **Option 3: Anterior pituitary** - This gland's secretion is directly influenced by neurosecretory factors from the hypothalamus.
- **Option 4: Thymus** - The thymus is involved in immune function and is not directly controlled by neurosecretory cells.

**Hint:** Look for the gland that receives direct regulatory signals from the hypothalamus.

### Step 4: Conclusion
Based on the analysis, the secretion of the **anterior pituitary** is under the control of neurosecretory nerve cells.

**Final Answer:** The secretion of the anterior pituitary is under the control of neurosecretory nerve cells.