Q:

Suppose that a person who is standing still, has a mean arterial pressure in the aorta of 13 kPa (98 mmHg). The blood pressure at the start of the arterioles of the feet will be:

waelhammad
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2022-10-18
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Suppose that a person who is standing still, has a mean arterial pressure in the aorta of 13 kPa (98 mmHg). The blood pressure at the start of the arterioles of the feet will be:

  1. about the same since healthy arteries present very little resistance to blood flow.
  2. less because blood pressure decreases along arteries as distance from the heart increases.
  3. more because of the hydrostatic pressure exerted by the column of blood in the arteries.
  4. less because of the decreased venous return which results from the person’s inactivity.
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waelhammad
2022-10-18
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C: When standing, the vertical column of blood in the arteries exerts pressure on the blood in the arterioles in the feet due to the head of liquid. Hence mean arterial BP in the feet will be considerably greater than 13 kPa.

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