What makes up the endocrine system and how does it function in the human body?

The endocrine system is made up of glands that produce hormones, which are chemical messengers that regulate various bodily functions. These glands include the pituitary, thyroid, adrenal, and pancreas, among others. The hormones released by these glands travel through the bloodstream to target organs and tissues, where they help regulate processes such as metabolism, growth, and reproduction. Overall, the endocrine system plays a crucial role in maintaining the body's internal balance and coordinating various functions to keep the body functioning properly.