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PHYSIO II > musch 3 > Flashcards

musch 3 Flashcards

1
Q

what are the 3 types of capillaries?

A
  1. continuous
  2. fenestrated
  3. sinusoidal or discontinuous
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2
Q

what can make it through continuous capillaries?

A

water soluble ions and molecules

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3
Q

what can go through fenestrated capillaries?

A

rapid diffusion of solutes and water

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4
Q

what can go through sinusoidal capillaries?

A

passage of whole cells, macro molecules, and particles

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5
Q

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

A

continuous capillaries

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6
Q

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

A

fenestrated capillaries

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7
Q

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

A

sinusoidal capillaries

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8
Q

do pre-capillary sphincters exist?

A

no

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9
Q

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

A

decrease

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10
Q

what happens when you increase arteriole pressure?

A

increase flow

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11
Q

what happens when you increase venous pressure?

A

decrease flow

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12
Q

what is diffusion dependent on? (4)

A
  1. concentration gradient
  2. surface area exchange
  3. diffusion coefficient
  4. diffusion distance
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13
Q

the diffusion coefficient of CO2 vs. O2

A

20X greater for CO2 than O2

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14
Q

what kind of transport is Q?

A

convective O2 transport

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15
Q

what kind of transport is AvO2?

A

diffusive O2 transport

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16
Q

4 characteristics of longitudinal capillary recruitment

A
  1. increase capillary flux
  2. increase capillary hematocrit
  3. increase surface area exchange
  4. increase diffusive O2 transport and exchange
17
Q

what is the role of the lymphatic system?

A

to prevent the accumulation of excessive interstitial fluid

18
Q

where does edema come from?

A
  1. obstruction of lymphatic vessels
  2. increased capillary permeability
  3. increase capillary hydrostatic pressure
19
Q

what is the net pressure?

A

+1 mmHg

PHYSIO II (33 decks)

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