Rathke's pouch forms

Options

A. Pineal gland
B. Thyroid gland
C. Spleen
D. Pituitary gland

Answer

### Step-by-Step Solution

1. **Understanding Rathke's Pouch**: Rathke's pouch is an embryonic structure that develops into the anterior lobe of the pituitary gland. It originates from the roof of the mouth (stomodeum) during early embryonic development.

2. **Analyzing the Options**:
- **Option 1: Pineal Gland**: The pineal gland is responsible for secreting melatonin, which regulates sleep-wake cycles. It does not develop from Rathke's pouch.
- **Option 2: Thyroid Gland**: The thyroid gland produces hormones such as triiodothyronine (T3) and thyroxine (T4) that regulate metabolism. It is not derived from Rathke's pouch.
- **Option 3: Spleen**: The spleen is involved in filtering blood and recycling iron from red blood cells. It does not originate from Rathke's pouch.
- **Option 4: Pituitary Gland**: The pituitary gland, often referred to as the "master gland," regulates various hormonal functions in the body. The anterior lobe of the pituitary gland is indeed formed from Rathke's pouch.

3. **Conclusion**: Based on the analysis of the options, the correct answer is that Rathke's pouch forms the **Pituitary Gland**.

### Final Answer
Rathke's pouch forms the **Pituitary Gland**.

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