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A&P 2 lecture > unit two blood vessels > Flashcards

unit two blood vessels Flashcards

1
Q

blood vessels

A

delivery system of dynamic structures that begins and ends at the heart

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2
Q

arteries

A

carry blood away from heart

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3
Q

capillaries

A

direct contact with tissue cells

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4
Q

veins

A

carry blood toward heart

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5
Q

what is the order of leaving the heart?

A
  • artery
  • arteriole
  • capillary
  • venule
  • vein
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6
Q

what are the thee layers of vessels?

A
  • tunica intima(inside)
  • tunica media
  • tunica adventitia(outside)
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7
Q

what are the three groups of arteries and what do they do?

A
  1. elastic arteries
    - conducting
    - pressure
  2. muscular arteries
    - disturbing
  3. arterioles
    - resistance
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8
Q

capillaries

A

-only single RBC can pass through at a time

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9
Q

what are the three types of capillaries?

A
  • continuous; tight, narrow, BBB
  • fenestrated; wider, kidneys and endocrine. glands
  • discontinous (sinusoidal); big gaps, free flow
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10
Q

what two vessels are in capillary beds?

A
  1. vascular shunt

2. true capillaries

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11
Q

venules

A

pericytes

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12
Q

vascular anastomoses

A

extra pathways for vessels

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13
Q

systolic pressure

A

highest pressure of aorta

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14
Q

diastolic pressure

A

lowest pressure of aorta

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15
Q

pulse pressure

A

difference between systolic and diastolic pressure

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16
Q

mean arterial pressure

A

pressure that propels blood into tissues

17
Q

what does clinical monitoring use and look for?

A
  • wrap cuff

- sounds of korotkoff

18
Q

hypertension

A

greater than 140/90

19
Q

hypotension

A

less than 90/60

20
Q

what are the three types of circulatory shock?

A
  1. hypovolemic shock
  2. vascular shock
  3. cariogenic shock
21
Q

what are two things in blood flow to the heart?

A
  1. myoglobin

2. mitochondria/ respiratory enzymes

22
Q

brain blood flow

A

flow must be constant 15%

23
Q

lung blood flow

A

increased O2 or decreased CO2

24
Q

blood flow

A

volume of blood flowing though vessels, organ or entire circulation in a given time period

25
Q

blood pressure

A

force per unit are extend on wall of blood vessel by blood

26
Q

resistance

A

amount of friction blood encounters with vessel walls

27
Q

blood viscosity

A

thickness or stickiness of blood

28
Q

total blood vessel length

A

the longer the vessel, the greater the resistance

29
Q

blood vessel radius

A

greatest influence on resistance, the bigger the vessel, the smaller the resistance

30
Q

what factors aid in venous return?

A
  1. skeletal muscle pump
  2. respiratory pump
  3. sympathetic vasoconstriction
31
Q

bulk flow

A

causes continuous mixing of fluid

32
Q

hydrostatic pressures

A
  1. HPc

2. HPif

33
Q

Colloid osmotic pressures

A
  1. OPc

2. OPif

A&P 2 lecture (12 decks)

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