"dudekadaktulos"
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Shortest,widest & most fixed part of S.I.Extends- pylorus to duodenojejunal flexure
C shape, Level of umblicus- L1,2,3.
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25 cm long- 5, 7.5, 10, & 2.5 cm.
Mostly retroperitoneal & fixed.
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Relationships of superior partAnteriorly
Quadrate lobe of liver
Gallbladder
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Posteriorly
Commom bile duct
Gastroduodenal a.
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Portal v.Superioely
Omental foramen
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Hepati ArtInferiorly
Head & Neck of pancreas
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Relationships of descending
part
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Anteriorly
Liver, Gall bladder
Transverse colon and
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mesocolon
Loops of small intestine
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PosteriorlyRight renal, hilum and ureter
Right renal vessels
IVC , Psoas major
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Medially
Head of pancreas
Common bile duct and
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pancreatic duct
Laterally
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Right colic flexureRelationships of horizontal part
Superiorly
-Head of pancreas, Uncinate pr
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InferiorlyLoops of small intestine
Anteriorly
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Radix of mesentery
Superior mesenteric a. and v.
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Posteriorly-Psoas major
Right ureter
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Inferior vena cavaAbdominal aorta ? testi art,
IMA
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Relationships of ascending part
Right
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Head of pancreas and abdominal aortaLeft
Left kidney and ureter
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Ant.- Transverse colon
& meso.,Lesser sac &
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stomachPost.- Lt. sympathetic
chain,Lt. psoas
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major,Lt.renal vessels,
Lt. testicular vessels &
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I.M.V.--- Content provided by FirstRanker.com ---
Fibromuscular bandwhich suspends &
supports the
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duodenojejunal flexure.
Arises from Rt. Crus of
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the diaphragm- DJFlexure & 3rd ? 4th part
of duodenum.
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Blood supply
Arteries
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Superiorpancreaticoduodenal a.
Inferior
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pancreaticoduodenal a.
1st Part- Rt. Gastric a.,
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supraduodenal a. ofwilkie(hepatic a.)
Veinsfollow arteries,
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draining directly into
superior mesenteric and
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hepatic portal veinsLymphatic Drainage-
Pancreaticoduodenal nodes
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Hepatic nodes
Coeliac n. & Sup. Mes. N
int. lymph trunk
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Cisterna chyliNerve Supply-
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Sympathetic- T9 & T10Parasympathetic-
Vagus- coeliac plexus-
duodenum along its arteries.
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