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
- While blood flows through a narrow vessal, the RBS’s take up the axial stream, so in the periphery ie.
- Near the vessel wall the blood contains mostly plasma (ie cell poor).
- Now small vessel arising from the side of the above vessel will have more plasma and a low hematocrit value.
- This is called plasma skimming. For this reason, viscosity in the smaller vessels as in capillaries, will be less and will help in flow.
- 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.
- In endocrine gland, liver capillaries due to protein secretion protein content increases.