What are exocrine glands ?

Explanation

### Step-by-Step Text Solution:

1. **Definition of Exocrine Glands**: Exocrine glands are specialized glands in the body that secrete substances through ducts. Unlike endocrine glands, which release hormones directly into the bloodstream, exocrine glands use ducts to transport their secretions.

2. **Mechanism of Secretion**: The secretions from exocrine glands are delivered to specific locations, which can be either the surface of the skin or the lining of internal organs. This is a key characteristic that differentiates them from endocrine glands.

3. **Examples of Exocrine Glands**:
- **Salivary Glands**: These glands produce saliva, which is released into the mouth through ducts. Saliva plays a crucial role in digestion and oral health.
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