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Physiology > E4: Ch15 > Flashcards

E4: Ch15 Flashcards

1
Q

arteries have ___ receptors

A

Beta 2

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2
Q

which artery subtype is known as “pressure reservoir”

A

arteries

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3
Q

arteries contain ___ muscle and are high in ___ tissue and ___ tissue

A

smooth, elastic, fibrous

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4
Q

has vessels move further away from the heart, elasticity ___ and muscularity ___

A

decreases, increases

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5
Q

3 vessels in micro circulation

A

arterioles, capillaries, venules

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6
Q

____ ____ are bands of smooth muscles that alter blood flow in capillary beds

A

pre-capillary spincters

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7
Q

gas exchange occurs in capillaries because ____ and occurs at the ___ membrane

A

they are 1 endothelium cell thick, basement

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8
Q

perictye: cell that contributes to ___ ____

A

capillary permibality

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9
Q

increase in pericytes = ___ in leaky capillaries

A

decrease

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10
Q

venues differ from capillaries by their ___ ____ ____

A

convergent flow pattern

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11
Q

capillaries have the ___ blood velocity and the ___ cross-sectional velcotiy

A

lowest, highest

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12
Q

which is there more of, arteries or veins?

A

veins

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13
Q

___ ___: force creates blood flow through body

A

ventricular contraction

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14
Q

sustaining ___ ___ keeps blood flow constant through arteries and vessels

A

driving pressure

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15
Q

blood flow is ___ proportional to pressure

A

directly

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16
Q

blood flow is ____ proportional to the resistance of vessels to blood flow

A

indirectly

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17
Q

3 factors of blood flow resistance

A

vessel radius
vessel length
blood viscosity

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18
Q

determinant of blood vescosity is the cross-sectional ___ of the vessel

A

area

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19
Q

mean arteriole pressure = ___ pulse pressure

A

1/3

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20
Q

“blood pressure” = ___ ___ pressure

A

arteriol blood pressure

21
Q

peripheral resistance is the resistance to flow. located in the ___

A

arterioles

22
Q

mean arterial pressure is proportional to ____ * ____

A

cardiac output, resistance

23
Q

high blood volume = ___ blood pressure

A

high

24
Q

in fast BP fixing, the cardio system compensates by doing what two things to return the BP to hemoestasis

A

vasodilation, decrease cardio output

25
Q

in slow BP fixing, the kidneys compensate by doing what to return the BP to homeostasis

A

excretion of fluid in the urine

26
Q

BP is controlled by what 2 things

A

hormones and sympathetic neurons

27
Q

norepinephrine controls artery tone. it ___ artery dilation and ___ constriction

A

decreases, increases

28
Q

alpha receptors have high affinity for ___

A

norepinephrine

29
Q

can the body alter blood flow to organs

A

yes

30
Q

the body can alter blood flow to organs because…

A

arteries are arranged in parallel manner

31
Q

flow to the __ stays consistent

A

Brain

32
Q

___ diabetes coronary arterioles, decreases resistance, and increases flow to muscles

A

adinosine

33
Q

which nervous system branch controls BP reflex control and blood distribution

A

CNS

34
Q

the ____ reflex controls BP

A

baroreceptor

35
Q

Baroreceptor reflex controls BP through activating the ____ cardio control center

A

medullary

36
Q

baroreceptor reflex in located where

A

walls of carotid

37
Q

heart function is reg’d by ___ control

A

antagonistic

38
Q

and increase in sympathetic nervous activity __ heart rate

A

increases

39
Q

gas exchange occurs through ___, ____, and ___ flow

A

diffusion, transcytosis, bluff flow

40
Q

diffusion rate is determined via ___ ___

A

concentration gradient

41
Q

absorption is ___ capillaries

A

into

42
Q

filtration is ___ capillaries

A

leaving

43
Q

if blood that flows through the capillaries heads to filtration, is leaves the capillaries and enters what

A

lymph vessel

44
Q

increase in capillary hydrostatic pressure is seen in heart ___

A

failure

45
Q

decrease in plasma protein concentration is seen in __ and __ failure

A

malnutrition, liver

46
Q

increase in interstitial proteins are seen in ___ capillary ____

A

excessive capillary leakage

47
Q

atherosclerosis is an ___ process

A

inflammatory

48
Q

hypertension is the result of failed ___

A

homeostasis

Physiology (21 decks)

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