Summarize the functions of the nervous system. The nervous system controls the muscular system by sending signals to the blood, telling it to move throughout the body.

The nervous system controls the digestive system by sending signals to the stomach, telling it to contract and digest food.

The nervous system controls the respiratory system by sending signals to the muscles, telling them to flex and move limbs.

The nervous system controls the circulatory system by sending signals to the lungs, telling them to expand and inhale oxygen.