Atlas of Human Anatomy by Netter

b. Right gastric artery to right portion of lesser curvature of stomach

c. Cystic artery usually from the right hepatic artery supplies the gallbladder and cystic duct

Superior mesenteric artery (SMA)

Arises at L1

Supplies the gut from the second part of duodenum as far as the distal one third of the transverse colon

Major branches include:

Inferior pancreaticoduodenal

a. Supplies duodenum (distal to entry of bile duct), pancreas, and spleen

b. Anastomosis with superior pancreaticoduodenal

Jejunal and ileal branches

a. Form anastomotic loops (arterial arcades)

Fewer large loops in jejunum

Many shorter loops in ileum

b. Loops give off vasa recta (straight arteries)

Longer in jejunum

Shorter in ileum

Ileocolic artery:

a. Supplies caecum and some of the ascending colon

b. Supplies appendix via appendicular branch

Right colic artery: supplies ascending colon and proximal transverse colon

Middle colic artery: supplies proximal two thirds of transverse colon

Inferior mesenteric artery (IMA)

Arises at L3

Supplies distal one third of the transverse colon → proximal rectum

Branches include:

Left colic artery: supplies distal transverse, descending and sigmoid colon

Superior sigmoid artery(ies): supplies sigmoid colon

Superior rectal artery (terminal branch of inferior mesenteric): supplies proximal rectum

Median sacral artery

Arises from posterior aspect of aorta just above bifurcation

Descends to supply lower lumbar vertebrae, sacrum and coccyx

Arterial supply: Paired branches of the abdominal aorta

[Plate 283, Arteries of Stomach, Liver and Spleen]