Respuesta :
Taking in account that an adult heart pumps 84 ml each beat and 72 beats per minute that means 84*72=6048 ml/min, then to pump 3500 ml needs less than a minute, so then 3500 * 60 / 6048 = 34.72 seconds.
Solution: Heart needs 34.72 seconds to pump 3500 ml, or 41.67 beats
The average heart takes 34.72 seconds to circulate the 3500ml of blood.
Further Explanation:
The blood circulating through the capillaries gets diffused into the tissues through thin walls and this fluid forms the interstitial fluid. The plasma proteins being heavier do not cross the membrane and only the water along with solutes diffuses out. The interstitial fluid will return to the capillaries by the lymphatic system, which drains it into subclavian veins. A major portion of fluid reenters the circulating system, whereas a small amount of it is drained in the veins. The lymphatic system connects with the subclavian veins that are part of the circulatory system and connect to the heart. The interstitial fluid from the tissue is transported back to the heart by lymphatic capillaries. The atria are the chambers that receive blood from veins. The atria contract and transfer the blood to the thick-walled chambers of the heart, called ventricles. The ventricles contract to pump the blood out of the heart. Thus, if an average heart circulates 84 ml of blood in each beat and sixty minutes, almost 72 beats occur then 72*84=6048 ml/min. An average time requires circulating 3500ml is:
[tex]3500\times\dfrac{60}{6048}=34.72\text{ minutes}[/tex]
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Cardiovascular system
Keywords:
Blood, circulation, occur, system, average, heart, subclavian, veins, fluid, requires, circulates, interstitial fluid, plasma protein
