Answer : (b). 105 bpm
Explanation :
given that,
Age = 40 years-old
Resting heart rate = 75 bpm
We know that,
Maximum heart rate = 220- Age
Maximum heart rate = 220-40 = 180 bpm
Heart rate reserve = Maximum heart rate - Resting heart rate
Heart rate reserve = 180 bpm - 75 bpm
Heart rate reserve = 105 bpm
Hence, this is the required solution.
(I know this bc I've done this question.)
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Answer:
The correct answer is :
Pulmonary artery to the - right ventricle
Pulmonary vein to the - left atrium
Aorta to the - left ventricle
Superior vena cava to the - right atrium
Explanation:
Pulmonary arteries are the arteries that carry the deoxygenated blood from the right ventricle of the heart to the lungs in the pulmonary circulation and pulmonary vein carries oxygenated blood from the lungs to the left atrium of the heart.
Aorta is the largest that carries blood that is pumped from the left ventricle and carries to the different parts of the body. Whereas superior vena cava is the large vein that comes from the upper body to the right atrium of the heart.
I believe it would take at least six hours for it to take effect <span />