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Physiology

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Blood

Question
10 out of 42
 

All of the following occur when the blood flow through to capillaries except



A Increase in hematocrit
B HB curve shift to the left

C Increased protein content
D Decrease in pH

Ans. A Increase in hematocrit
  1. While blood flows through a narrow vessal, the RBS’s take up the axial stream, so in the periphery ie.
  2. Near the vessel wall the blood contains mostly plasma (ie cell poor).
  3. Now small vessel arising from the side of the above vessel will have more plasma and a low hematocrit value.
  4. This is called plasma skimming. For this reason, viscosity in the smaller vessels as in capillaries, will be less and will help in flow.
  5. This is called Fahraeus- Lindqvist effect. So, the hematocrit value is always low in capillaries. In systemic capillaries there is a decrease in pH & Hb curve shift to the left.
  6. In endocrine gland, liver capillaries due to protein secretion protein content increases.

Blood Flashcard List

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