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ch 4 > the bv > Flashcards

the bv Flashcards

1
Q

three major luminal wall layers found in almost all bv, which are a continuation of the hearts histo layers

A

tunica intima
tunica media
tunica adventitia

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2
Q
  • tunica intima is a continuation of the __
  • tunica media continuation of __
  • tunica adventitia continuation of ___
A

endocardium
mycardium
epicardium

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3
Q

elastic arteries AKA

-eg aorta, common iliacs, carotid, brachiocephalic, subclav

A

conducting arteries

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4
Q

in elastic art. tunica intima is composed of

  • attenuated ___
  • thin/incomplete internal elastic lamina
  • thicker __ with elastic fibers, collagen I, fibroblasts, smooth musc
A

endothelium

CT

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5
Q

in elastic a. tunica media is made primarily of ___ sheets of elastic fibers w/ some collagen I & smooth musc

  • poss thin external elastic lam
  • outer usually has __ __
A

fenestrated

vasa vasorum

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6
Q

in elastic a. tunica adventitia is made of loose fibroelastic ct and ___ ___ are numerous

A

vasa vasorum

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7
Q

muscular arteries aka

-eg brachial, radial, renal, femora

A

distributing arteries

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8
Q

musc a. tunica intima is very __,

  • endothelium
  • some CT, a few __ musc cells
  • __ elastic lamina
A

thin
ct
internal

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9
Q

musc a tunica media is most dominant and thickest, and primarily ___ ___ muscle and richly innervated with ___ so it has a strong cnxn over a sm area

A

circular smooth

sympathetics

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10
Q

musc a. tunica adventitia is fibroelastic ct w/ sulfated __

  • fibroblasts
  • vasa vasorum : small bv
A

GAGs

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11
Q

in arterioles, the tunica intima has no __ elastic lamina, and the tunica media has no __ elastic lamina
-tunica adventitia is sim to musc a.

A

internal

elastic

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12
Q

thickest most dom wall layer in arteriole

A

tunica media

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13
Q

what gen tissue type makes up the tunica adventitia of areries

A

ct

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14
Q

which type of artery has most developed internal elastic lamina

A

muscular a.

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15
Q

which is the thinnest of the major luminal wall layers in arteries

A

tunica intima

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16
Q

short terminal arteriole branches that lack a true tunica media, lead to capillaries and a thoroughfare that lead to venules

A

metarterioles

17
Q

thicker tunica media and adventitia with many ANS nerves that functions to control lumen size and amt of blood into caps

A

AVA (arteriovenous anastomosis)

18
Q

blood flow into caps is controlled by

  • metarterioles
  • ___
  • lumen size of terminal arterole
  • pre-capillary ___
A

AVAs

sphincters

19
Q

caps are made of a single layer of flattened __ cells and have __ vessicles that form tiny pockets thru cyto to move large molecules

A

endothelial

pinocytic

20
Q

__ ___ is the cell jxn found bt endothelial cells that moves macromolecules and allows cell movement

A

fasciae occludens

21
Q

MC cap type found in muscle, CT, many organs and follows gen struct

A

continuous

22
Q

considered residual mesenchyme cells that are numerous on caps and venules and can secrete BM and matrix componens

A

pericytes

23
Q

pericytes can __ and change into endothel cells, smooth musc, and fibroblasts

A

divide

24
Q

pericytes function to ___ and regulate ___ flow maybe

A

heal

blood

25
Q

__ __ cap in CNS with zonula occludens instead of FO, barrier reg by endothelium but influenced by astrocytes

A

modified continuous

26
Q

fenestrated caps are found in the pancreas, ___, and __ organs and are pores w/ thin protein diaphragm containing 8 fibrils
-allow greater movement

A

intestines

endocrine

27
Q

____ caps are in bone marrow, liver, spleen, lymph organs and some endocrine organs

A

sinusoidal

28
Q

__ caps have enlarged diameter, large fenestrae, no prot diaphragm and function for enhanced xchange bt __ & tissue

A

sinusoidal

blood

ch 4 (5 decks)

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