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Question 3 In order for blood to flow from the veins back into the heart, the pressure...

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Medical Sciences

Question 3

In order for blood to flow from the veins back into the heart,the pressure in the right atrium must be lower than the pressure inthe veins. Two physiological pumps help increase pressure in thevenous system.

  1. How do pressure differentials that allows for inflation anddeflation of the lungs also assist in venous return?
  2. Explain why individuals experience edema in their lowerextremities during the course of a long distance flight.

Answer & Explanation Solved by verified expert
3.9 Ratings (428 Votes)
Two physiological pump which aid venous retrun are askeletal muscle pump Pheripheral muscles in the thigh and calf act as a peripheral heart when the muscles in the thigh and calfs contract it act pressure over the valves and open the valve which help to drain blood from the superficial vein to deep vein and    See Answer
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