How Your Body Heals (Part 3)

What You'll Learn

Hormones are chemical messengers produced by glands that travel through the blood to target organs. They regulate growth, metabolism, mood, and many other body functions.

Key Words

respiratory system
organ system

Steps

Step 1 — Read

Read and learn: Hormones are chemical messengers produced by glands that travel through the blood to target organs. They regulate growth, metabolism, mood, and many other body functions.

Step 2 — Do

Conduct the experiment by following the instructions.

Step 3 — Observe

Compare the before and after states.

Step 4 — Record

Write your conclusion: did the results match your hypothesis?

Check Your Understanding

Question 1

1 of 3

What does the brain do?