LEC62: Vascular Anatomy: The Aorta Flashcards Preview

Structures: Part Deux > LEC62: Vascular Anatomy: The Aorta > Flashcards

Flashcards in LEC62: Vascular Anatomy: The Aorta Deck (42):
1

major parts of the aorta

 

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aortic valve 

ascending aorta

transverse aortic arch

descneidng aorta

thoracho-abdominal aorta

abdominal aorta 

aortic bifurcation

pelvic arteries 

2

first branches off of aorta?

R and L coronary aa

3

order of branches off of aortic arch?

 

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1) incominate / brachiocephalic trunk > R carotid, R subclavin 

2) L carotid

3) L subclavian

 

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4

4 vessels that go to brain? what is unique about them?

R and L carotids and vertebral aa 

can serve brain with just 1 of these vessels because of extensive collateral circulation

5

identify vessels 

 

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6

most common artery used for bypass? what does it replace?

internal thoracic used to replaced L coronary artery

7

what is double aortic arch? incidence?

0.01% of patients 

duplicated aortic arch 

circular/redundant secondary arch encircles trachea and esophagus, can cause clinical sequealae and make difficult to swallow, breathe

8

what's an aberrant right subclavian artery

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comes off aortic arch LAST rather than immediately from inominant / brachiocephalic trunk 

so must loop around to get from L to R side of body 

can compress trachea and esophagus

9

what is this 

 

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aberrant right subclavian artery

10

what is happening here 

 

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see aberrant R subclavian artery beating on wall of trachea/esophagus

11

what is aberrant L subclavian artery

comes off as 1st vessel in transverse aortic arch

12

what is bovine arch?

11% occurrence 

3 branches come off of 1 branch - L common carotid comes off of inominant / brachiocephalic trunk too 

 

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13

types of arterial vascular diseases?

1) occlusive disease 

2) aneurysm disease

14

what is occlusive disease, where

plaque, hardening, stenosis 

in carotid aa

cause of strokes

15

what is aneurism

wall of artery cracks, leakage outside of artery, causes dilitation 

16

why do strokes occur

internal carotid develops plaque

plaque > downstraem > brain

loss of circulation in brain

17

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plaque build up > stenosis > stroke

18

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stroke

19

what is thoracic outlet syndrome

extra cervical rib in thoracic outlet where nn, aa, vv traverse anterior & middle scalene mm, compresses the brachial plexus, subclavian aa

20

cause of aneurysm or stenosis of subclavian artery?

thoracic outlet syndrome

21

what is arrow pointing to

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22

what is arrow pointing to

 

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stenosis

23

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aneurismal degeneration of entire aortic arch 

if in transverse arch, likely syphilis

24

what is artery of adamkiewicz?

aka great radicular artery

makes a hairpin turn by anterior spinal artery 

crucial to spinal circulation for most all animals

very important to not damage in younger person, can lead to paralysis

 

25

what supplies diaphragm?

phrenic artery from abdominal aorta

26

abdominal aorta major branches

celiac artery

superior mesenteric artery

renal arteries 

inferior mesenteric artery

iliac arteries

27

branches of celiac artery

splenic 

left gastric

common hepatic

gastroduodenal

28

where is most common site for occlusion of aorta?

renal arteries

29

SMA branches 

interior pancreatico-duodenal 

jejunal branches 

middle colic 

ileocolic 

these begin collateralization btwn all otehr mesenteric/intestinal branches

30

how many renal arteries? where?

come off abdominal aorta after SMA 

2 renal arteries 

usu R then L (60% of time)

31

what comes off abdominal aorta after renal aa? branches?

inferior mesenteric artery 

left colic, sigmoidal, superior-hemmorhoidal 

 

32

name these branches of aorta 

 

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33

where does aorta terminate?

at common iliac aa

34

what are the mesenteric collaterals? 

1) superior and inferior pancreaticoduodenal aa, via gastroduodenal a, for celiac-SMA

2) arc of riolan, "meandering mesenteric artery," for SMA-IMA

3) marginal artery of drummond (at periphery of colon) 

4) lumbars, epigatric, middle sacral, internal iliac

35

what is arc of riolan?

anastomoses between IMA and SMA 

runs in the mesentery

36

what is arc of drummond?

IMA-SMA collateralization

runs just on the inside of the mesentery

37

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horseshoe kidney

38

what is this

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horseshoe kidney

39

what is this 

 

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hepatic artery aneurysm

40

what is this

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splenic artery aneurysm

41

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marginal artery of drummond 

IMA-SMA, more interior

42

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arc of riolan

SMA-IMA collateralization, more exterior in mesentery