Jejunum Ileum Flashcards
Between what is the J/I located ?
And is the J/I intra or retro peritoneal ?
It is located between the duodenum and the cecum , and between the DJ angle and the ileocaecal valve
It is Intraperitoneal
What is the length of the J/I in adults ?
6-8 meters
What is the J/I Internal walls lined with ?
The internal wall is lined with villi and microvilli
In the J/I there is absorption of what ?
- Glucose
- Amino acids
- Fatty acids
- Glycerol
- Triglycerides
- Water
- Minerals & vitamins
On which side of J/I is the mass of the loops ?
Most of the mass of the loops is on the left side of the body
The J/I both have loops what type of loops does each one have ?
Jejunum = loops are horizontal
Ileum = loops are vertical
What is the difference between the d.colon and the a.colon with relation to the J/I ?
The d.colon is completely covered by the loops of the J/I while the a.colon on the right is not
What are the J/I sliding surfaces ?
- T.colon , t.mesocolon
- Greater omentum
- Ant abdominal wall
- PPP ( post peritoneum )
Retro peritoneal space : - Kidneys
- Ureter
- AA
- IVC
- Common iliac V & A
- Duodenum
- Pancreas
- D.colon & a.colon
- Bladder
- Uterus , ovaries , fallopian tubes ,
- Rectum
- Lat abdominal wall
- Cecum
- Sigmoid
The J/I arterial supply comes from ?
Is from the sup mesenteric a
At what level and who does the sup mesenteric a arise from ?
And what is his course ?
The sup mesenteric a arises from the AA at the level of L1
Immediately Inf to the celiac trunk it moves in between the layers of mesentery , splitting into approximately 20 branches . These branches anastomose to form loops , called arcades . From the arcades , long and straight aa arise ,called vasa recta
What is the innervation of the J/I (para/symp)
Sympathetic = lesser splanchic n T10-T11
Parasympathetic = vagus n
