Where is hypothalamus located ?

Explanation

### Step-by-Step Text Solution:

1. **Definition of Hypothalamus**: The hypothalamus is a small region of the brain that plays a crucial role in controlling various bodily functions and is often referred to as the "master gland" due to its regulatory influence over the endocrine system.

2. **Location**: The hypothalamus is located on the undersurface of the brain. It is situated just below the thalamus and above the pituitary gland.

3. **Relation to Other Structures**: The hypothalamus is connected to the pituitary gland via a stalk, allowing it to regulate the pituitary's secretions, which in turn influence other endocrine glands throughout the body.

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