Answer:
Explanation:
1. Brain: Nervous system
Elbow: Skeletal system/muscular system
Stomach: Digestive system
Heart: Circulatory system
Kidney: urinary system
2. The nervous system sends a signal to the muscular system. This allows you to move your muscles, in turn your muscles control the movement of your bones.
3. The unoxygenated blood pumps through the right side of the heart, which then moves it to the lungs. At the lungs the blood becomes oxygenated and then moves to the left side of the heart. The left side then pumps the blood to the rest of the body.
