The glands of the endocrine system secrete the hormones directly into the blood.

Hormones have several functions in the body, and they mainly have their effects on the organs.

The glands and the hormones of the endocrine system almost affect every single cell in the body. The endocrine system plays a role in regulating the mood, body growth, tissue repair and general metabolism. The fact that whether a person is fat or thin depends on the endocrine system. Endocrine system also influences the reproductive cycle of a woman. It also promotes cell growth and division. The endocrine system and the organs together ensure that the body functions properly.

The hormones transfer information from one cell to another. One hormone affects one organ and one organ may be affected by several hormones. The hormones circulate in the body through the blood stream; however they affect only the cells that hold the receptor for that particular hormone. The cells are programmed to receive the message form the hormones. The study of endocrinology is very important for studying the human body. Solutions to several conditions and diseases lie in the hormone secretion by the endocrine system.

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