Pls help me ill make u a brainliest if its correct Sandra measured her heart rate and her breathing rate at rest and again after doing 50 jumping jacks. What is the main reason that both her heart rate and her breathing rate went up with exercise?
Answers
1.They both increased to carry heat away from her working muscles more efficiently.
2.They both sped up to supply her working muscles with enough oxygen to remain in homeostasis.
3.Her muscles were out of shape and required extra blood and oxygen to maintain her jumping pace.
4.Her lungs and heart ran short on oxygen while she was exercising and sped up to maintain homeostasis.