Which system controls body functions using hormones?

The endocrine system is responsible for controlling body functions through the use of hormones, which are chemical messengers secreted by glands directly into the bloodstream. These hormones travel to various organs and tissues to regulate a myriad of processes, including metabolism, growth and development, mood, and reproductive functions.

The glands that make up the endocrine system include the pituitary gland, thyroid gland, adrenal glands, and pancreas, among others. Each gland releases specific hormones that target particular organs and tissues, facilitating intricate communication within the body to maintain homeostasis.

In contrast, the nervous system relies on electrical impulses and neurotransmitters to send signals rapidly across the body, the muscular system is responsible for movement through muscle contractions, and the integumentary system, which includes the skin, hair, and nails, provides protection and regulates temperature but does not control body functions through hormones.