Question

A marathon runner sprints across the finish line at the end of a race, pumping her arms into the air while lengthening the stride of her legs. Which two organ systems are primarily responsible for her movements in the race?

Answer 1

The muscular system and the nervous system are primarily responsible for the movements of a marathon runner.

Step-by-step explanation:

The two organ systems primarily responsible for the movements of a marathon runner are the muscular system and the nervous system.

The muscular system consists of the muscles in the body, which contract and generate the force needed for movement. In the case of the runner, the leg muscles contract to push off the ground and propel the body forward, while the arm muscles help with balance and coordination.

The nervous system controls these muscle contractions by sending electrical signals from the brain to the muscles. It coordinates the movements of different muscle groups, adjusts the stride length, and regulates the timing of arm movements. It also plays a role in maintaining balance and coordination during running.