The nervous system is sending nerve receptors to your brain so that your arm the muscular system will throw the ball the skeletal system allows yourself to hold the ball and works with the muscles to contract and the amp system allows your body to create energy so you can throw the ball
I think the answer is a sorry if I get it wrong
Answer:
The circulatory system
Explanation:
The heart, veins and arteries works together to service the cells of the body
