Cells of the human body are constantly communicating with each other to work together. But how do they communicate? The answer involves a balance of the endocrine system working with other bodily systems to create an ideal physiological environment.
The endocrine system is a series of ductless glands that produce chemical and hormonal molecules that activate changes in other target cells or organs. Transportation of these chemicals/hormones generally occurs via the circulatory system.
The exocrine system is a series of ducts and glands that produce chemical and hormonal molecules causing activation at its target as well. Examples of substances produced by the exocrine system include sweat, tears, saliva, and milk.
The difference between endocrine and exocrine is the location of effector targets and where the chemical signaling molecules are sent, which are endogenously (endocrine) or exogenously (exocrine) locations respectively.
