Question

PLEASE HELP!!!!

Look at the diagram below that shows the connection between the circulatory and the respiratory systems. Use the diagram to explain why pulse and breathing rates change when you exercise.

Answer 1

during exercise there is an increase in physical activity and the muscle cells respire more than they do when the body is at rest

Step-by-step explanation:

the heart rate increases during exercise as well as the rate of breathing, this makes sure that more oxygen is absorbed into the blood and more carbon dioxide is removed from it