Question

Endocrine glands are

• A. ductless glands whose secretions pour directly into blood
• B. have ducts and pour their secretion into blood directly
• C. have ducts which straight way pour secretions into target organs
• D. All of the above

Answer 1

Answer: (A)

Endocrine glands (ductless glands) or glands of internal secretion have no ducts and their secretion get absorbed into intermediate surrounding blood circulation to reach the specific organ to initiate a particular metabolic change.