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Flashcards in musch 3 Deck (19):
1

what are the 3 types of capillaries?

1. continuous
2. fenestrated
3. sinusoidal or discontinuous

2

what can make it through continuous capillaries?

water soluble ions and molecules

3

what can go through fenestrated capillaries?

rapid diffusion of solutes and water

4

what can go through sinusoidal capillaries?

passage of whole cells, macro molecules, and particles

5

what kind of capillaries are found in smooth m, skeletal m, cardiac m, CNS, lungs?

continuous capillaries

6

what kind of capillaries are found in endocrine and exocrine glands, and kidneys?

fenestrated capillaries

7

what kind of capillaries are found in the liver, spleen and bone marrow?

sinusoidal capillaries

8

do pre-capillary sphincters exist?

no

9

does capillary pressure increase or decrease from arterial to venous end?

decrease

10

what happens when you increase arteriole pressure?

increase flow

11

what happens when you increase venous pressure?

decrease flow

12

what is diffusion dependent on? (4)

1. concentration gradient
2. surface area exchange
3. diffusion coefficient
4. diffusion distance

13

the diffusion coefficient of CO2 vs. O2

20X greater for CO2 than O2

14

what kind of transport is Q?

convective O2 transport

15

what kind of transport is AvO2?

diffusive O2 transport

16

4 characteristics of longitudinal capillary recruitment

1. increase capillary flux
2. increase capillary hematocrit
3. increase surface area exchange
4. increase diffusive O2 transport and exchange

17

what is the role of the lymphatic system?

to prevent the accumulation of excessive interstitial fluid

18

where does edema come from?

1. obstruction of lymphatic vessels
2. increased capillary permeability
3. increase capillary hydrostatic pressure

19

what is the net pressure?

+1 mmHg