A member asked:

How do the heart and lungs supply enough oxygen to the body during sustained physical activity?

A doctor has provided 1 answer
Dr. Sergio Schabelman answered

Specializes in Cardiology

Increasing HR and RR: The body responds to physical activity by increasing Heart rate (and cardiac output) and respiratory rate. Also, muscles become more efficient using the available oxygen transported by blood.

Answered 4/27/2020

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