Blood transmits them to various organs and tissues of the human body. Hormones act as a messenger which is released into the blood. Our body contains two different kinds of glands.Įndocrine Glands: These glands, such as the pituitary and adrenal glands, do not have ducts and deliver their secretions through the blood straight to the site of action.Įxocrine Glands: These glands have ducts by which their secretions are transported. The introduction of hormones to the blood takes place via endocrine glands. Hormones are various chemicals released within the human body that regulate and control the activities of multiple organs. Thus, a small amount of hormone can trigger a significant response in the human body. Moreover, hormones also affect the way a human body stores and uses energy and regulates the volume of fluids as well as the level of sugar and salt in the blood. They control the functions of organs and influence their growth, reproduction and sexual characteristics. The importance of hormones in the proper functioning of the human body is immense. These chemical messages help to turn on or turn off cellular processes that control stress, appetite, growth, sleep cycles, blood sugar, sex drive, and sexual function. Hormones carry chemical messages from the glands where they are produced to cells in different parts of the human body. Hormones are chemical substances that act like messenger molecules that stream through the bloodstream.
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