Question

Give scientific reasons:

Endocrine glands are also called ductless glands.

Answer 1

• Hormones are secreted by endocrine glands. 
• These glands do not have any arrangement of their own to store or carry their secretions.
• Hence, as soon as hormones are produced, they are directly released into the blood circulation.
• Thus, though these endocrine glands are present at specific locations in our body, their secretions reach all parts of the body via blood.
• Therefore, endocrine glands are also called ductless glands.