The heart rate reserve is equal to the difference between maximum heart rate and resting heart rate. Maximum heart rate is usually calculated by:
Hmax = 220 - age
Hmax = 220 - 40 = 180
HRR = Hmax - Hrest
HRR = 180 - 75
= 105
The answer is B
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Systemic circulation which is the movement of blood through tissues of the heart carries oxygenated blood from left ventricle through arteries.
Systemic circulation moves blood between the heart and rest of body . It send oxygenated blood out to cells and return the degenerated blood to the heart.
Heart is the only organ in circulatory system organs . blood goes from heart to lung to get oxygen. lungs are the part of the respiratory system. Heart pumps oxygenated blood through artiest to the body. Systemic provide the functional blood supply to all body tissue. Oxygen locks into molecule called hemoglobin in red blood cells.
To learn more about Systemic circulation here
brainly.com/question/811428
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<span>B. 4-8 weeks
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I think it's C,21 day or....etc.If not than it's def. Zumba( it might be Zumba)
