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GI week 2 > Gi tract and vessels > Flashcards

Gi tract and vessels Flashcards

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1
Q

the spleen gets its blood from?

A

celiac trunk-sneak

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2
Q

Where does the abdominal aorta begin?

A

At the aortic hiatus of the diaphragm-T12 and divides into common oliac arteries at L4

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3
Q

what level does the celiac trunk lie at?

A

T12

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4
Q

What level does the superior mesenteric lie at? Inferior?

A

L1, L3

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5
Q

What are the major branches of the celiac trunk?

A

left gastric, common hepatic, gastroduodenal artery

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6
Q

is the spleen derived from the foregut?

A

No but its celiac blood! INTRAPARTNEAL

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7
Q

What are the organs supplied by the celiac trunk?

A 
Stomach
Duodenum
Liver
Gall bladder
Pancreas
Spleen
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8
Q

What are the branches of the common hepatic artery?

A

gastroduodenal, hepatic artery, hepatic artery proper

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9
Q

The gastroduodenal artery supplies what

A

greater curvature of the stomach and the duodenum

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10
Q

The proper hepatic artery branches into what

A

R and L hepatic arteries which enter the liver at the porta hepatis

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11
Q

What are the branches of the gastroduodenal artery>

A

supraduodenal. superior pancreaticduodenal artery and right gastroomental

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12
Q

what is the blood supply to the pancreas?

A

SMA and celiac anastomosis

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13
Q

what are the branches of the splenic artery

A

L-gastromental, short gastric, pancreatic, splenic vein

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14
Q

what supplies the fundus of the stomach

A

short gastric arteries, from the splenic artery

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15
Q

What is the first part of the duodenum called?

A

deudenal bulb or ampulla

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16
Q

WHERE do most peptic ulcers occur?

A

80% in the duodenal bulb or CAP, 65% of ulcers in the duodenum are in the posterior wall.

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17
Q

What are peptic ulcers associated with?

A

H. pylor 90%

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18
Q

Whats a side effect of peptic ulcers?

A

perforation of the wall that will erode the pancreas or gastroduodenal artery causing massive hemorrhage

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19
Q

What are acquired hiatal hernias due to

A

weakening and eidening of the esophageal hiatus (T10)

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20
Q

What is the most common hiatal hernia? Whats it due to?

A

sliding, GERDthe gastroesphageal region slides superior into the thorax

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21
Q

What is the paresophageal hernia?

A

less common, pouch of peritoneam with the fundus extending into the hiatus anterior- NO GERD!

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22
Q

What are the major branches of the superior mesenteric?

A 
Jejunal & Ileal
Appendicular  
Ileocolic
R colic
Middle colic
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23
Q

What are the organs supplies by the SMA

Study These Flashcards
A 
Pancreas 
Duodenum
Jejunum
Ileum
Cecum, appendix
Ascending colon
Hepatic flexure
Proximal ⅓ of transverse colon
24
Q

What is the path taken by the SMA to get to the mesentery?

Study These Flashcards
A

btwn the neck and unicate process of the pancrease

25
What are the SMA branches to the small bowel?
inferior pancreaticoduodenal arteries, jejunal, ileal from the left side of the SMA
26
Whats the difference bwtn the branches of the SMA on the jejunum vs ileum
jejunum has longer vasa recta and bigger windows in the mesentery, ileum has shorter vasa recta and sometimes concentric arches of arteries withinthe mesentery
27
What are the branches of the right SMA
``` Ileocolic Appendicular Right Colic Middle Colic -most go to large bowel ```
28
what are some characteristics of the jejum?
prominant folds, mesentery next to it has no fat, long arteries
29
Characteristics of the ileum?
short straight arteries with lots of loops, fat, peyers patches,
30
what are the major branches of the IMA
L colic Sigmoidal Superior rectal
31
What organs are supplied by the IMA
Distal ⅔ of transverse colon Descending colon Sigmoid colon Rectum
32
What are teniae coli of the colon
outer longitudinal muscle fibers, confied to 3 parallel bands- not a complete outer coat
33
What parts of the colon are secondarilty retroperitoneal
acedning and decending
34
what does the marginal artery represent?
anatomsis bwn SMA and IMA
35
What are the watershed areas of the colon?
splenic flexture, rectosigmoid junction, right colon
36
Appendicitis can result in?
necrosis and perforation, nacteria can evade the wall
37
Intital pain from a appendicitis is felt where/ THen goes where?
umbilicus T10, then moves to McBurneys point, 1/3 distance from the ASIS to the umbilicus, , lower right quandrant, rebound tenderness
38
How is a portal system defined>
arrangement of the vasculature whereby blood must pass through two sets of capillaries between the L ventricle and the R atrium.
39
Do the veins in the hepatic portal system have valves?
nope
40
Where deos venous drainage from the gut go first?
to the liver
41
what are the tributaries of the portal vein posterior to the neck of the pancreas?
Superior mesenteric vein Splenic vein Inferior mesenteric vein
42
Where is the hepatic portal vein found?
hepatoduodenal ligament (free edge of lesser omentum).
43
Portal HTN is an obstruction of what?
the portal vein, causes reversed blood flow into the systemic veins but blood can still reach RA via collateral routes
44
What makes up the esophageal varices?
the left gastric vein (portal) and azygos (systemetic) of veins in the gastroesophageal region
45
what results in the configuration of caput medusae
superior, inferior, and superficial brancehs of the epigastric veins and paraumbiical veins
46
What results in the rectal hemorrhoids or piles.
superior rectal vein (portal) middle and inferior rectal veins
47
What are clinical manifestations of portal HTN?
ascites, GI bleed, spelnomegaly, caput medusae
48
Where do the lymph nodes of the jejenum and ileum travel
within the folds of the mesentery toward the aorta and eventually to the cisterna chyli via the thoraic duct
49
LN follow the arteries, what artery in the upper portion of the rectum, what about the middle and lower part of the rectm?
superior rectal artery, inferior reactal artery branches of the external iliac
50
the cardiac orifice of the stomach is at what level?
T10, contains cardiac sphincter
51
The funcdus of the stomach is at?
5th intercostal space
52
what part of the duodenal is intraperitoneal?
the first part
53
What does the suspensory ligament (ligament of tritz) do?
suspends the 4th part of the duodenum from the rigth crus of the diaphgram, this part is just begining to be intraperitoneal
54
Where does the ielium end?
ileocecal juntion
55
Where does the jejum begin?
duodenaljejunal flexure
56
What state is the jejunum often in>
empty :(

GI week 2 (8 decks)

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