Abdominal Vasculature Flashcards
how is arterial blood supplied to abdominal viscera
abdominal organs are supplied by branches off abdominal aorta
branches of the celiac trunk
common hepatic artery, splenic artery, left gastric
celiac trunk
splits into 3 branches that supply the liver, gall bladder, spleen, pancreas, stomach, and duodenum with blood; first large branch of abdominal aorta
common hepatic artery
main artery supplying the liver, also sends off a branch to gall bladder and a large branch that passes inferiorly and around the lower boarder of stomach
splenic artery
tortous (curvey) artery that passes behind the stomach to spleen; also sends off small branches to the pancreas and a branch to the lateral side of the stomach
left gastric
smallest of 3 branches, supply the medial border of the stomach. the left gastric artery and branches from both splenic and common hepatic arteries all form an asatoming network of arteries supplying the stomach
superior mesentric artery
large branch off of aorta below the celiac trunk that sends off branches that supply small intestines and part of large intestines (ascending and transverse colon)
inferior mesentric artery
supplies test of colon (descending and sigmoid) branches of the superior mesentric artery supply the transverse colon anatomose with branches of the inferior mesentric artery
the branches of the aorta supply the digestive tract (celiac and mesentric arteries) drain into veins that form the
hepatic portal vein
parts of heptatic portal system
splenic vein, inferior mesentric vein, superior mesentric vein (all draining into hepatic portal veins then to the inferior vena cava)
splenic veins
Blood vessel that drain the blood from the spleen, the stomach fundus and part of the pancreas
inferior mesentric vein
blood vessel that drains blood from the large intestine; terminates when reaching the splenic vein, which goes on to form the portal vein with the superior mesenteric vein
superior mesentric vein
blood vessel that drain the blood from the small intestine’s; terminate behind the neck and pancreas, combined with the splenic vein to form the hepatic portal vein
heptatic portal veins
blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas, and spleen to the liver
heptatic veins draining into IVC
Drain deoxygenated blood from the liver into the inferior vena cava; 3 upper heptatic veins draining from left, middle, and right parts of liver
CLINICAL: Portal Hypertension is
cirrhosis or tumor impedes the blood through the hepatic portal vein; blood has to find alternative route back to the heart parentheses must make it way to superior or inferior vena cava without passing through portal vein-portacaval anastomoses)
CLINICAL: Caput Medusae
appearance of distended and enforced superficial epigastric veins, which are seen radiating from the umbilieus across the abdomen; symptom of portal hypertension bc it is caused by dialation of the para umbilical veins, which carries oxygenated blood from mother to fetus
CLINICAL: Esophogeal Varices
abnormal, enlarged veins in the tube that connects the throat and stomach (esophagus). This condition occurs most in ppl with serious liver disease and develop when normal blood flow to liver is blocked by a clot or scar tissue
CLINICAL: Portal Hypertension
High blood pressure and hepatic portal system, can be fixed by rerouting the blood around the liver to caval system
other important branches of arterial blood supply to the abdominal viscera
renal arteries and gonadal arteries
renal arteries
arise on the left inferior side of abdominal aorta, supply the kidney with blood, immediately below superior mesentary artery
gonadal arteries
refers to testicular in males and ovarian artery in females; “paired” artery with one arising from abdominal aorta
