Which organ is the control center that sends messages to the rest of the body?

• A. Heart
• B. Brain
• C. Lungs
• D. Stomach

Answer: (B)

The brain serves as the control center by processing information from sensors and sending instructions through nerves to muscles, organs, and glands. This central command coordinates actions like movement, reflexes, and automatic processes such as heartbeat and breathing. The heart’s role is to pump blood, guided by signals from the brain, but it doesn’t issue the overall commands. The lungs carry out gas exchange and adjust breathing in response to brain signals, while the stomach digests food and communicates needs, yet neither acts as the body’s master controller.