Flashcards in musch 3 Deck (19):
what are the 3 types of capillaries?
3. sinusoidal or discontinuous
what can make it through continuous capillaries?
water soluble ions and molecules
what can go through fenestrated capillaries?
rapid diffusion of solutes and water
what can go through sinusoidal capillaries?
passage of whole cells, macro molecules, and particles
what kind of capillaries are found in smooth m, skeletal m, cardiac m, CNS, lungs?
what kind of capillaries are found in endocrine and exocrine glands, and kidneys?
what kind of capillaries are found in the liver, spleen and bone marrow?
do pre-capillary sphincters exist?
does capillary pressure increase or decrease from arterial to venous end?
what happens when you increase arteriole pressure?
what happens when you increase venous pressure?
what is diffusion dependent on? (4)
1. concentration gradient
2. surface area exchange
3. diffusion coefficient
4. diffusion distance
the diffusion coefficient of CO2 vs. O2
20X greater for CO2 than O2
what kind of transport is Q?
convective O2 transport
what kind of transport is AvO2?
diffusive O2 transport
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
what is the role of the lymphatic system?
to prevent the accumulation of excessive interstitial fluid
where does edema come from?
1. obstruction of lymphatic vessels
2. increased capillary permeability
3. increase capillary hydrostatic pressure