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Anatomy

Anatomy exam II Blood and Nerve Supply ot GIT

QuestionAnswer
The _____ is a continuation of thoracic aorta; gives off 3 unpaired branches to the GIT abdominal aorta
What are the 3 trunks of the abdominal aorta? celiac, superior mesenteric artery, and inferior mesenteric artery
The ___ supplies stomach to major duodenal papilla celiac trunk
The ____ supplies duodenum at the major duodenal papilla to proximal 2/3 of transverse colon superior mesenteric artery
The ____ supplies distal 1/3 of transverse colon to the rectum inferior mesentericc artery
What are the 3 branches of the celiac trunk? left gastric, common hepatic and splenic
What are the 5 branches of the superior mesenteric artery? 1. inferior pactreaticoduodenal 2. intestinal 3. ileocolic 4. right colic 5. middle colic
What are the 3 branches of the inferior mesenteric artery? 1. left colic 2. sigmoid 3. superior rectal
The _____ drains blood from GIT, spleen, and pancreas into the liver portal vein
The portal vein is formed by union of _____ and ___ veins superior mesenteric and splenic veins
____ may drain into splenic or portal vein inferior mesenteric vein
The paraumbilical veins drain into _____ vein portal
Anastomoses between branches of portal and systemic circulations become functional during ____ portal hypertension
What are the 4 veins of the portocaval anastomoses? 1. left gastric 2. superior rectal 3. paraumbilical 4. retroperitoneal
_____ is fresh bleeding from esophageal varices (enlarged esophageal vv. drain into the azygos veins due to the higher pressure in the left gastric v.) hematemesis
____ is an enlarged paraumbilical vv. which drain directly into the portal v. dump portal blood into the superficial veins of the anterior abdominal wall, specifically the superficial epigastric veins caput medusa
A _____ is fresh bleeding from hemorrhoids (enlarged inferior and middle rectal vv. which anastomose with the superior rectal v., a direct continuation of the inf. mesenteric v.) hematochezia
____ is an enlarged spleen from blood in splenic v. splenomegaly
_____ _____ _____ is Blockage of the portal vein such as a tumor of the head of the pancreas compressing the portal vein, portal vein thrombosis, portal vein stenosis pre-hepatic portal hypertension
____ ____ _____ is a hepatic disease with increased fibrosis blocking flow through the liver sinusoids, such as cirrhosis of the liver, schistosomiasis (developing countries), thrombosis of hepatic veins hepatic portal hypertension
____ ____ ____ is an Increase pressure in the IVC such as from congestive heart failure affecting the right heart, tricuspid regurgitation, IVC obstruction, constrictive pericarditis post-hepatic portal hyperension
What is the sympathetic nerve that innervates the forgut? greater thoracic splanchnic nn
What are the 2 sympathetic nerves that innervate the midgut? lesser thoracic splanchnic nn and least thoracic splanchnic nn
What is the sympathetic nerve that innervates the hindgut? lumbar splanchnic nn
What is the parasympathetic nerve that innervates the forgut and the midgut? vagus nn
What is the parasympathetic nerve that innervates the hindgut? pelvic splanchnic nn
sympathetic nerves off of the spinal cord have _____ outflow; cell bodies in the IML cell column; pass through without synapsing in the sympathetic ganglia; come out as _____ thoracolumbar; splanchnic nerves
The _____ ____ ____ are the thoracic splanchnic nn. that pierce the right crus of the diaphragm to enter the abdomen preganglionic sympathetic fibers
The ____ ____ ____ reach the viscera via mesentaries postganglionic sympathetic fibers
Parasympathetic nerves from the spinal cord have _____ outflow craniosacral
The ____ ____ ____ enter the abdomen thru the esophageal hiatus preganglionic parasympathetic fibers
The ____ ____ ____ are very short; in the wall of GIT postganglionic parasympathetic nerves
Created by: luckynikki