Which is the smallest endocrine gland?

Explanation

**Step-by-Step Solution:**

1. **Understanding Endocrine Glands:**
- Endocrine glands are specialized organs that secrete hormones directly into the bloodstream. Unlike exocrine glands, they do not have ducts.

2. **Identifying the Smallest Endocrine Gland:**
- Among the various endocrine glands in the human body, the smallest one is the pineal gland.

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