Biology

Biology, 13.07.2019 04:00, tm133043

To pump blood through the body, the heart must overcome the force of gravity. which body position would require the least work from the heart?

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Physics, 02.07.2019 14:00, raiderries

At a resting pulse rate of 77 beats per minute, the human heart typically pumps about 67 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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Biology, 20.07.2019 12:30, NerdyE

The human heart has to pump the average adult's 6.2 l of blood through the body every minute. the heart must do work to overcome frictional forces that resist the blood flow. the average blood pressure is 1.3×104 n/m2 .

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Chemistry, 28.07.2019 20:30, winnie45

Read the following summary, which describes blood flow and heart output in space. then, answer the question. the heart doesn't have to do as much work to pump blood when in orbit. after only one day beyond earth's gravity, astronauts have a lower blood volume. they can lose as much as 20 percent of their blood volume while on a space mission. since the body has less blood to push around and the heart is pushing more blood with each beat, an astronaut's heart rate also slows down to compensate. what process is being described? a. breathing b. excretion c. homeostasis d. respiration

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Mathematics, 08.10.2019 22:00, CHRONICxDJ

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?

Answers: 2

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