Jejunum And Ileum Flashcards

0
Q

Where jejunum begins

A

Duodenojejunal flexure

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1
Q

This is where the digestive tract resumes intraperitoneal course

A

Duodenojejunal flexure

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2
Q

Where ileum ends and is the union of terminal ileum and the cecum

A

Ileo cecal junction

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3
Q

How long is jejunum and ileum

A

6-7m
2/5 jejunum
3/5 ileum

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4
Q

Mostly lie in the LUQ of the infracolic compartment

A

Jejunum

Ileum - RLQ

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5
Q

Thicker walls
Larger in diameter
More vascular
Large and well developed circular folds

A

Jejunum

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6
Q

Where you can find Peyer’s patches

A

Ileum

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7
Q

Most common site of Meckel’s diverticulum

A

Ileum

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8
Q

Layer of peritoneum which encloses an organ and connects it to abdominal wall

A

Mesentery

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9
Q

Fan-shaped fold of peritoneum that attaches jejunum and ileum to posterior abdominal wall

A

Mesentery

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10
Q

Most mobile parts of the intestine

A

Transverse colon

Small intestine

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11
Q

Mesentery that has less fat and prominent arterial arcades

A

Mesentery of jejunum

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12
Q

Arterial supply of jejunum and ileum

A

SMA

Branches: jejunal and ileal a

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13
Q

Arteries unite and are called

A

Arterial arcades

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14
Q

Arterial arcades give rise to straight arteries called

A

Vasa recta

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15
Q

Have longer arterial arcades

A

Jejunum

16
Q

Drains jejunum and ileum

A

SMV

17
Q

SMV unites with splenic vein to form

A

Hepatic portal v

18
Q

SMV unites with what to form portal v

A

Splenic v

19
Q

Specialized LV in intestinal villi that absorbs fat

A

Lacteals

20
Q

Within the mesentery, lymph passes to what lymph nodes

A

Juxtaintestinal
Mesenteric
Superior central

21
Q

LN close to intestinal wall

A

Juxtaintestinal

22
Q

LN scattered among arterial arcades

A

Mesenteric

23
Q

LN located along the proximal part of SMA

A

Superior central nodes

24
Q

Mesenteric lymph nodes drains to

A

SM LN

25
Q

Parasympathetic innervation of jejunum and ileum comes from

A

Posterior vagal trunk

26
Q

Increase motility and secretion
Vasodilation
- effects of what kind of nervous stimulation

A

Parasympathetic

27
Q

SMA and its branches are surrounded by _____________ through which nerves are conducted to the parts supplies by this artery

A

Periatrial nerve plexus

28
Q

Sympathetic innervation of small intestine comes from

A

SM ganglion

29
Q

Parasympathetic presynaptic fibers synapse with postsynaptic fibers where

A

Myenteric & submucosal plexus

30
Q

SYMPATHETIC presynaptic fibers synapse with postsynaptic fibers where

A

Celiac and SM ganglia

31
Q

Part of the intestine that has a feathery image

A

Jejunum

32
Q

Has long vasa recta

A

Jejunum

33
Q

Has many arterial arcades

A

Ileum

34
Q
Most common malformation of GIT
Finger-like pouch
Remnant of embryonic yolk stalk
From anti-mesenteric border
May mimic acute appendicitis
A

Meckel’s diverticulum

35
Q

> 50% of bowel is resected

STEP ( serial transverse enteroplasty procedure)

A

Short bowel syndrome