Question

1. Why are endocrine glands called ductless glands?

Answer 1

Endocrine glands are also known as the ductless glands because of the fact that their secretions are released directly into the blood, not to any tubes or ducts. Hypothalamus, Pituitary gland, Pineal body, Thyroid, Parathyroid, Adrenal glands, Pancreas, and Gonads are the major glands that make up the human endocrine system.