The Endocrine System

Your endocrine system is like a messaging service inside your body. It uses chemicals called hormones to send instructions to different body parts. These messages help you grow, sleep, and stay healthy.

What the Endocrine System Does

The endocrine system is made up of glands. Glands are small organs that make hormones. These hormones travel through your blood to tell different parts of your body what to do.

For example, hormones help you grow taller. They tell your body when to feel hungry or sleepy. They even help you handle stress.

Important Glands

The pituitary gland in your brain is called the master gland. It tells other glands what to do. The thyroid gland in your neck controls how fast your body uses energy.

The adrenal glands sit on top of your kidneys. They help your body respond when you are scared or excited. Each gland has an important job.

Fun Facts

• The pituitary gland is only the size of a pea but controls many body functions.
• Your body has more than 50 different hormones.
• The endocrine system works closely with the nervous system to keep your body balanced.

Did You Know?

Hormones can travel through your entire body in less than one minute because they move through your bloodstream!