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Physio > Peripheral circulation > Flashcards

Peripheral circulation Flashcards

1
Q

Mechanoreceptors are loacted

A

In the walls of aortic arch and carotid sinus

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2
Q

LV pressure in Systemic circulation

A

120/0

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3
Q

Mean Pulmonary A. Pressure in Pulmonary circulation

A

15

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4
Q

LA pressure in pulmonary circulation

A

5-10

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5
Q

Ciculation affect on exercising skeletal muscle

A
  1. Decrease vascular resistance
  2. Increase BF
  3. Increase capillary P
  4. Increase Capillary filtration
  5. Increase Lymph flow
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6
Q

CO=

A

HR X SV

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7
Q

Aorta pressure in the Systemic circulation

A

120/80

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8
Q

Pulmonary ciruit affect of exercise

A
  1. Increase in CO
  2. Decrease in Pulmonary vascular resistance
  3. Increase in pulmonary blood volume
  4. Increase in number of perfused capillaries
  5. Increase rate of gas exchange by increasing Capillary surface area
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9
Q

What factors decrease MAP

A

Decreased sympathetic activity

EPI that stimulates β2

NO

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10
Q

Preload is determined by

A

Venous return

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11
Q

Arterial system affect of excercise

A

Hemoglobin still fully saturated

Large decrease in TPR due to dilation of skeletal muscle bed

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12
Q

Blood flow is proportional to

A

Tissue metabolism

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13
Q

Mechanoreceptors respond to

A

Rise in intravascular P

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14
Q

Pulmonary A pressure in the Pulmonary Circulation

A

25/8

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15
Q

RV pressure in Pulmonary Circulation

A

25/0

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16
Q

Poiseuille equations represents

A

Relationship of flow, pressure, and resistance

17
Q

Vessel Compliance equation

C=

A

ΔV/ΔP

18
Q

Reynold’s number=

A

[(diameter) (Velocity) (Density)] / Viscosity

19
Q

How do blood in veins contribute to circulating blood volume

A

No contribution

20
Q

Cerebral circulation is dependent on

A

Arterial PCO2

21
Q

Q=

A

[P1 - P2] /R

22
Q

Pulse pressure =

A

Systolic - Diastolic

23
Q

Factors that cuase an Increase in MAP

A

NE

EPI

Angieotensin 2

AVP

24
Q

MAP=

A

Diastolic + 1/3 pulse pressure

2/3 Diastolic + 1/3 Systolic

CO X TPR

25
Q

What CN relay information back to medulla

A

CN 9 (carotid)

CN 10 (aortic arch)

26
Q

Reynold’s number is used for

A

Measure Laminar and turbulent flow

>2,000 = Turbulent

<2,000 = Laminar

27
Q

RA pressure in the Systemic circulation

A

0

Physio (11 decks)

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