GENERAL HISTOLOGY

Detailed explanation-1: -The Endocrine system sends hormones through the Circulatory system to control and coordinate body functions in much the same way as the nervous system uses tiny electrical signals. brain and complement each other, but they tend to work at different speeds.

Detailed explanation-2: -The endocrine system uses the circulatory system to send chemical messengers. The endocrine system is composed of ductless glands throughout the body. Endocrine glands release hormones directly into the bloodstream and the blood transports them to target cells.

Detailed explanation-3: -Hormones can exist freely in systemic circulation, but the majority are bound with transport proteins. Transport proteins hold hormones inactive in systemic circulation and create a reservoir within the circulation that facilitates an even distribution of hormones throughout the tissue or organ.

Detailed explanation-4: -The endocrine system relies on feedback mechanisms to control the hormone levels in the circulatory system. The physiological activity of a hormone depends mainly on its concentration within the circulatory system.