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Undeleted > lecture 12/13: Histology of CV System (Baekey) > Flashcards

lecture 12/13: Histology of CV System (Baekey) Flashcards

1
Q

Where is number of vessels and cross sectional area greatest?

A

capillaries

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2
Q

where is most blood volume?

A

veins

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3
Q

What kind of vessel has the most elastic tissue?

A

large arteries

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4
Q

in which vessels is elastic tissue absent?

A

capillaries, venules

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5
Q

Table p. iii on Histo section in SCAVMA

A

:)

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6
Q

how do blood vessels develop?

A

vacuole fusion

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7
Q

how are endothelial cells joined?

A

intercellular junctions

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8
Q

Components of tunica intima in elastic arteries (3)

A

endothelium, subendothelium, internal elastic membrane

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9
Q

Components of tunica media in elastic arteries (3)

A

smooth muscle, elastic fibers, collagenous fibers

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10
Q

Components of tunica externa in elastic arteries (3)

A

collagenous fibers, nervi vasorum, vasa vasorum

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11
Q

vasa vasorum

A

network of small blood vessels that supply large blood vessels (“vessels of the vessels”)

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12
Q

Difference b/w elastic and muscular arteries

A

exactly the same, except muscular arteries do not have collagenous fibers

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13
Q

Pericytes

A

aka pericapillary cells.Wrap around fenestrated capillaries to keep proteins in the capillaries and let fluid through (regulate permeability through capillary to help create urine)

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14
Q

How is blood flow regulated through capillaries?

A

precapillary sphincters of arteriole control flow into capillary bed proper. Anteriolar-venous anastomoses connect terminal arteriole directly with a venule

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15
Q

continuous capillary and found where?

A

tight junctions between endothelial cells. Found in muscle, lungs, nervous system

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16
Q

fenestrated capillaries are found where?

A

pores present in endothelial cells and basal lamina. Found in endocrine glands, intestine, kidneys

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17
Q

Sinusoidal capillaries and where found?

A

large diameter and gaps. Basal lamina diminished or absent. Found in liver, spleen, bone marrow

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18
Q

Tunica media and intima in veins vs. arteries

A

veins have less developed/thinner tunica intima and media than arteries

19
Q

venules

A

Formed where several capillaries meet. May form portal systems b/w two capillary networks (i.e. hepatic)

20
Q

tunica intima of veins contains (3)

A

endothelium, thin subendothelium, valves

21
Q

tunica media of veins contains

A

limited muscle and elastic fibers

22
Q

tunica externa of veins contains

A

collagenous fibers

23
Q

Endocardium in heart includes: (3)

A

endothelium, subendothelial coat, subendocardial coat. Analogous to tunica intima

24
Q

Myocardium in heart =

A

cardiac muscle

25
Q

epicardium in heart includes (2)

A

subepicardial coat, serous mesothelium

26
Q

between which layers are purkinje fibers located

A

endocardium and myocardium

27
Q

epicardium =

A

visceral pericardium

28
Q

annuli fibrosi

A

fibrous rings that surround each of the heart valves in bovine. Continuous with the connective tissue of the valve

29
Q

ossa cordis

A

bone formation around aortic valve in bovine

30
Q

trigonum fibrosum

A

fibrous triangle b/w AV canals in dogs

31
Q

lymph capillary vs. capillary

A

lymph capillaries have little or no basal lamina (makes them more permeable). Also have anchoring microvilli

32
Q

Lymph vessel vs. vein

A

thinner walled, irregularly shaped, tunics not well defined

33
Q

what kind of artery is aorta?

A

elastic artery

34
Q

where is external elastic membrane located?

A

between tunica externa and tunica media

35
Q

Veins have ______ band of internal elastic membrane, while arteries have ______ band of internal elastic membrane

A

discontinuous; continuous

36
Q

What structures are present in connective tissue between artery and veins?

A

nervi vasorum, vasa vasorum, arterioles, capillaries

37
Q

What kind of cells are glands (i.e. bile duct) surrounded by?

38
Q

glomerular capillaries =

A

fenestrated capillaries

39
Q

podocyte

A

a specialized pericyte in the glomerulus of the kidney. Wrap around fenestrated capillaries to keep proteins in the capillaries and let fluid through (regulate permeability through capillary to help create urine)

40
Q

mesangial cells

A

form the “glue” that holds fenestrated capillaries in a ball within glomerulus

41
Q

sinusoidal capillary diameter compared to continuous and fenestrated capillaries

42
Q

portal triad contains

A

bile duct + artery + vein

43
Q

what makes up skeleton of valves?

A

hyaline cartilage. Stains purple/blue

Undeleted (134 decks)

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