Why are endocrine glands called ductless glands ?

Explanation

### Step-by-Step Solution:

1. **Definition of Endocrine Glands**: Endocrine glands are specialized organs that secrete hormones directly into the bloodstream rather than through ducts.

2. **Lack of Ducts**: Unlike exocrine glands, which have ducts to transport their secretions (like saliva or digestive enzymes), endocrine glands do not possess any ducts. This absence of ducts is a key characteristic that defines them as "ductless."

3. **Hormone Secretion**: The hormones produced by endocrine glands are released directly into the circulatory system. This allows them to travel throughout the body and reach their target organs or tissues, where they exert their effects.

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