MICROANATOMY

Detailed explanation-1: -Endocrine glands make chemicals called hormones and pass them straight into the bloodstream. Hormones can be thought of as chemical messages. From the blood stream, the hormones communicate with the body by heading towards their target cell to bring about a particular change or effect to that cell.

Detailed explanation-2: -There are three mechanisms by which endocrine glands are stimulated to synthesize and release hormones: humoral stimuli, hormonal stimuli, and neural stimuli.

Detailed explanation-3: -The endocrine glands do not have duct, so they release these hormones directly into the blood. The hormones travel in the blood circulation to reach their target sites (cells, tissues or organs) they can also travel in the lymphatic system when they are destroyed in the liver and removed by the kidneys.

Detailed explanation-4: -The glands and organs that make hormones and release them directly into the blood so they can travel to tissues and organs all over the body. The hormones released by the endocrine system control many important functions in the body, including growth and development, metabolism, and reproduction.