ANATOMY

Detailed explanation-1: -They carry information and instructions from one set of cells to another. The endocrine (pronounced: EN-duh-krin) system influences almost every cell, organ, and function of our bodies.

Detailed explanation-2: -The endocrine and nervous systems work closely together. The brain sends instructions to the endocrine system. In return, it gets constant feedback from the glands. The two systems together are called the neuro endocrine system.

Detailed explanation-3: -The endocrine system regulates the metabolic activities of the body like body growth, sexual development & other biological processes. The endocrine gland signalling is slow but its effects are prolonged. Some of the major endocrine glands are the Pituitary, Pineal, Thyroid, Thymus, Gonads, etc.

Detailed explanation-4: -Answer and Explanation: The correct answer is b) They have ducts.