Thoratic Abdominal Circulation

Question 1

Blood supply to heart

Answer 1

Coronary branches are first branches off from aorta (supplies epicardium and myocardium)
Right coronary artery supplies = right atrium, most of right ventricle
Left coronary artery supplies = left atrium, most of left ventricle, part of right ventricle
Supply of blood from both overlaps in many areas of the heart

Question 2

Venous return

Answer 2

Great, middle, and small cardiac veins

Veins drain into coronary sinus, which dumps into right atrium

Question 3

Bypass surgery

Answer 3

Use either internal thoratic artery or great saphenous vein

Double bypass implies 2 coronary arteries were blocked

Question 4

Upper body circulation

Answer 4

Aortic arch 
Brachiocephatic trunk = right common carotid, right subclavian 
Left common carotid artery 
Left subclavian artery 
Supplies head and arms 
Blood returns through superior vena cava

Question 5

Lower body circulation

Answer 5

Abdominal aorta (from descending thoratic aorta) 
Supplies abdomen and legs 
Blood returns through inferior vena cava

Question 6

Circulation to the abdomen

Answer 6

Abdominal aorta
From thoratic descending aorta, passes through aortic hiatus of diaphragm, bifurcates into R/L common iliac arteries
4 main branches = CT, SM, R, IM

Question 7

Celiac trunk

Answer 7

Distal to aortic hiatus of diaphragm
Divides into left gastric, splenic, and common hepatic arteries
Supplies esophagus, stomach, proximal duodenum, liver, binary apparatus, and pancreas

Question 8

Left gastric artery

Answer 8

From celiac trunk
Ascends to esophageal hiatus
Supplies distal esophagus and lesser curvature of stomach

Question 9

Splenic artery

Answer 9

From celiac trunk
Along superior border of pancreas
Supplies body of pancreas, spleen, and greater curvature of stomach

Question 10

Common hepatic artery

Answer 10

From celiac trunk
Runs to hepatoduodenal ligament and into porta hepatis of liver
Supplies liver, gall bladder, stomach, pancreas, and duodenum

Question 11

Gastroduodenal

Answer 11

From common hepatic artery
Descends posterior to gastroduodenal junction
Supplies stomach, pancreas, and proximal duodenum

Question 12

Superior mesenteric

Answer 12

From abdominal aorta
Inferior to celiac trunk
Runs to ileocecal junction
Supplies part of GI tract derived from midgut

Question 13

Renal

Answer 13

From abdominal aorta
Inferior to superior mesenteric artery
Parked arteries run lateral to each kidney

Question 14

Inferior mesenteric

Answer 14

From abdominal aorta
Inferior to renal arteries
Descends to left of abdominal aorta
Supplies part of GI tract derived from hindgut