Q:

Why is the blood pressure in the pulmonary arteries less than in the aorta?

waelhammad
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2022-10-18
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Why is the blood pressure in the pulmonary arteries less than in the aorta?

  1. the expansion and contraction of the lungs pumps blood through its blood vessels.
  2. blood flowing to the lungs does not need to overcome gravity.
  3. pulmonary resistance is greater than the peripheral resistance.
  4. pulmonary resistance is less than peripheral resistance.
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waelhammad
2022-10-18
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D: As pulmonary resistance is much lower than systemic resistance, the BP required to overcome it is much less too. Hence heh right ventricle does not need to produce the high pressure of the left ventricle to move blood through the pulmonary circuit.

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