At a resting pulse rate of 77 beats per minute, the human heart typically pumps about 65 mL of blood per beat. Blood has a denstity of 1060 kg / m3. Circulating all of the blood in the body through the heart takes about 1 min for a person at rest. (a) How much blood is in the body? (b) On average, what mass of blood does the heart pump with each heart beat?

Question

Mathematics

Phoenix Mccarty

12 January, 08:21

At a resting pulse rate of 77 beats per minute, the human heart typically pumps about 65 mL of blood per beat. Blood has a denstity of 1060 kg / m3. Circulating all of the blood in the body through the heart takes about 1 min for a person at rest. (a) How much blood is in the body? (b) On average, what mass of blood does the heart pump with each heart beat?

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Answers (1)

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Charlize Reynolds · Answer 1

Given:

1 minute circulation

77 beats per minute

65 ml of blood per beat

blood density of 1060kg/m³

a) how much blood is in the body?

77 beats per min * 65ml per beat = 5,005 ml per minute

5,005ml * 1l/1000ml = 5.0005 Liters.

I'm not sure on how to solve for question b.