Biological basis of behavior: Endocrine system

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7A: Glands are special organs that secrete chemical messages called hormones, which seep into the blood - it’s like putting a tea bag in hot water. As the heart pumps, this blood carries these chemical messages throughout the body, allowing the hormones to interact with specific target cells and organs. Not only do these hormones play a role in maintaining our appetites and concentrating urine, but they also have a huge impact on how we behave. In this module we will examine how these variegated hormones play a role in influencing human behavior, growth, and development.