THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The spleen derives its arterial supply solely from the splenic artery. The latter, as already seen, runs along the upper border of the body and tail of the pancreas and enters the splenorenal ligament accompanied by the splenic vein and often by the pancreatic tail.

Detailed explanation-2: -The superior mesenteric artery (SMA) comes off from the anterior surface of the aorta just below the origin of the celiac trunk at the level of L1 behind the neck of the pancreas. Then, it descends down in front of the uncinate process and the third (horizontal) part of the duodenum to enter the small bowel mesentery.

Detailed explanation-3: -This artery descends along the posterior margin of the pancreas where it divides into left and right branches. The right-sided branches anastomose with the pancreaticoduodenal arcade (of Kirk) to supply the head and neck of the pancreas.

Detailed explanation-4: -In human anatomy, the splenic artery or lienal artery is the blood vessel that supplies oxygenated blood to the spleen. It branches from the celiac artery, and follows a course superior to the pancreas. It is known for its tortuous path to the spleen.