6 Blood Supply to Abdominal Organs Flashcards

1
Q

What are the unpaired branches off the abdominal aorta

A

Celiac A (T12)
Superior mesenteric A (L1)
Inferior mesenteric A (L3)

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2
Q

What does the celiac trunk supply

A

Foregut derivatives

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3
Q

What are the foregut derivatives

A
Liver and bile ducts
Distal esophagus
Stomach
Duodenum - proximal to common bile duct
Pancreas
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4
Q

What does the SMA supply

A

Midgut derivatives

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5
Q

What are the midgut derivatives

A
Duodenum - distal to common bile duct
Jejunum
Ileum
Cecum
Appendix
Ascending colon
Transverse colon - proximal 2/3
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6
Q

What does the IMA supply

A

Hindgut derivatives

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7
Q

What are the hindgut derivatives

A

Transverse colon - distal 1/3
Descending colon
Sigmoid colon
Rectum - proximal 1/3

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8
Q

What level does the abdominal aorta bifurcate

A

L4

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9
Q

What are the branches off the celiac trunk

A

Left gastric A
Splenic A
Common hepatic A

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10
Q

What does the L gastric A supply

A

Distal esophagus and lesser curvature of the stomach

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11
Q

What does the splenic A supply

A

Spleen

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12
Q

What are the branches off the splenic A

A

Short gastric A

L gastroepicloic A

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13
Q

What does the short gastric A supply

A

Fundus

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14
Q

What ligaments is associated with the splenic A

A

Splenorenal L

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15
Q

What ligament is associated with the short gastric A

A

Gastrosplenic L

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16
Q

What does the L gastroepicloic A supply

A

Greater omentum and greater curvature of the stomach

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17
Q

What does the common hepatic A branch into

A

Proper hepatic A and gastroduodenal A

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18
Q

What ligament is associated with the proper hepatic A

A

Hepatoduodenal L

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19
Q

What does the right gastric A anastomose with and what do they supply

A

Left gastric A; distal stomach

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20
Q

What A supplies the bile ducts

A

R + L hepatic A

21
Q

Where does the majority of blood come to the liver from

A

Hepatic portal V

22
Q

What V drain blood from the liver

A

Middle hepatic V
R hepatic V
L hepatic V

23
Q

What organs drain into the hepatic portal system

A
Spleen
Stomach
Colon
Pancreas
SI
24
Q

What does the gastric V anastomose with

A

Esophageal V

25
Q

What is the importance of the portal V anastomoses

A

They are ways to get blood back into the IVC when the liver is cirrhosed

26
Q

What does the epigastric V anastomose with

A

Paraumbilical V

27
Q

What does the superior rectal V anastomose with

A

Middle rectal V

28
Q

Who is SMA syndrome more common in

A

Women

29
Q

What supplies the sigmoid colon

A

IMA

30
Q

Where does the superior rectal A

A

IMA

31
Q

what is the marginal A of drummond comprised of

A
Ileocolic A
R colic A
Middle colic A
L colic A
Sigmoidal A
SMA + IMA
32
Q

What controls the ANS

A

Hypothalamus

33
Q

Sympathetic activation ________ motility in GI; parasympathetic activation ___________ in GI

A

Decrease; increase

34
Q

What levels does the sympathetic chain occupy

A

T1-L2

35
Q

What are the options for sympathetic nerves exiting the cord

A

Synapse at same level
Synapse higher lower
Synapse with splanchnic n outside sympathetic chain

36
Q

What level is the greater splanchnic N

A

T5-9

37
Q

Where does the greater splanchnic N synapse

A

Celiac ganglion

38
Q

What does the celiac ganglion innvervate

A

Foregut

39
Q

What level are the lesser splanchnic N

A

T10-11

40
Q

Where does the lesser splanchnic N synapse

A

Mesenteric ganglion

41
Q

Where does the msenteric ganglion innervate

A

midgut and travels along SMA

42
Q

What level does the least splanchnic N come from

A

T12

43
Q

Where does the least splanchnic N synapse

A

Aorticorenal ganglion

44
Q

What does the aorticorenal ganglion innervate

A

Kidneys and adrenal medulla

45
Q

What level does the lumbar splanchnic n come from

A

L1-2

46
Q

Where does the vagus n innervation stop

A

L colic flexure (splenic flexure)

47
Q

What takes over parasympathetic innervation after the vagus

A

Pelvic splanchnic n

48
Q

What is SMA syndrome

A

Lessening of the angle between the AA and the SMA around the 3rd part of the duodenum

49
Q

Which portion of the SI has few arcades and long vasa recta

A

Jejunum