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HSS305 Anatomy > Chapter 22: Blood Vessels > Flashcards

Chapter 22: Blood Vessels Flashcards

1
Q

what are the three layers of blood vessels

A

tunica interna, tunica media, tunica externa

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2
Q

what type of tissue is tunica interna

A

simple squamous epithelial

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3
Q

what is the tissue of the tunica interna called

A

endothelium

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4
Q

what is tunica interna’s function

A

diffuse molecules

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5
Q

what type of tissue is the tunica media

A

smooth muscle tissue and elastic fibers

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6
Q

what does tunica media regulate

A

diameter of the lumen

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7
Q

the tunica media’s constriction of diameter causes

A

increase in blood pressure and blood flow

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8
Q

what tissue is the tunica externa make of

A

connective tissue and collagen fibers

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9
Q

what do arteries do

A

carry blood away from the heart

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10
Q

what is the arteries innervated by

A

sympathetic autonomic nervous system

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11
Q

what is the function of arteries

A

stimulates smooth muscle cells to contract and cause constriction of blood vessel walls

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12
Q

what is another name for elastic arteries

A

conducting arteries

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13
Q

what is the function of elastic arteries

A

propel blood distally

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14
Q

what are some examples of elastic arteries

A

aorta, pulmonary trunk, common carotid artery

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15
Q

what is another name for muscular arteries

A

distributing arteries

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16
Q

where are muscular arteries found

A

extremities

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17
Q

what is another name for arterioles

A

resistance arteries

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18
Q

what do arterioles do

A

regulate blood flow into capallaries

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19
Q

what is the arterioles innervated by

A

the sympathetic nervous system to regulate resistence

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20
Q

what is the construction of elastic arteries like

A

largest lumen diameter, thick media, lots of elastic fibers

21
Q

what is the construction of the muscular arteries like

A

medium sized, thinner tunica externa, thick tunica internal

22
Q

what is the construction of the arterioles,

A

small, no turnica externa, thin tunica internal

23
Q

what are metarteriole

A

terminal end of arteriole and entrance into capillaries

24
Q

what are in metarteriole

A

precapillary sphincters and thoroughfare channels

25
Q

what do precapillary sphincters do

A

regulate flow of blood into capillaries

26
Q

what do thoroughfare channels do

A

run through capillary bed to connect to venule

27
Q

what are anastomosis

A

joining blood vessels

28
Q

what are the two type of anastomosis

A

arterial anastomosis and atriovenous anatomosis

29
Q

what is the function of arterial anastomosis

A

alternate route for blood to reach tissue for collateral circulation

30
Q

what are arterial anastomosis

A

two or more arteries that supply blod to one capillary bed

31
Q

what is the function of atriovenous anatomosis

A

direct flow of blood from arteriole to venule

32
Q

what is capillaries

A

network of branched and interconnecting vesselvessels

33
Q

what is the function of capillaries

A

exchange of substances and gases like o2 and co2 throughout the tissues

34
Q

what type of tissues make up capillaries

A

simple squamous epithelial tissue without a tunica media or externa

35
Q

what are the three types of capillaries

A

continuous, fenestrated, and sinusoidal capillaries

36
Q

what type of tissue is continuous capillaries

A

complete endothelium

37
Q

what is function of continuous capillaries

A

lets water and small solutes diffuse

38
Q

what are the properties of fenestrate capillaries

A

endothelium with small pores for rapid exchange of water and solutes

39
Q

what are some examples of fenestrated capillaries

A

choroid plexus and endocrine glands

40
Q

what are the properties of sinusoidal capillaries

A

endothelium have gaps between cellsto allow water, solutes, and proteisn through

41
Q

what are some examples of sinusoidal capillaries

A

liver and bone marrow

42
Q

what do veins do

A

carry blood back to the heart

43
Q

what are venules

A

groups of capillaries that unite, are thin and have no tunica media

44
Q

what are veins

A

merged venules with a thick tunica externa and thin media

45
Q

what are some examples of veins

A

varicose veins, hemorrhoids

46
Q

what is the portal system

A

blood flow from one capillary network to another before flowing through the heart

47
Q

what are examples of ptal systems

A

hypothalamus to anterior pituitary and hepatic portal system

48
Q

describe blood flow

A

heart to elastic arteries to muscular arteries to arteries to metarterioles to capillaries to venules to veins to heart

HSS305 Anatomy (20 decks)

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