GENERAL HISTOLOGY

Detailed explanation-1: -The celiac trunk originates directly off the aorta, just below the aortic diaphragmatic hiatus, and gives off three branches-splenic artery, left gastric artery, and common hepatic artery.

Detailed explanation-2: -The common hepatic artery may arise from the abdominal aorta or superior mesenteric artery (SMA). All or part of the right and left hepatic arteries may arise from other vessels. The hepatic artery arises from the aorta in  2% of people.

Detailed explanation-3: -The Hepatomesenteric trunk originated from the ventral surface of the aorta at the L1 level. After coursing anteriorly, the trunk divided into the common hepatic artery and the superior mesenteric artery.

Detailed explanation-4: -There are two blood vessels which supply blood to the liver, namely hepatic artery and portal vein. Hepatic artery delivers oxygenated blood from aorta to the liver. Hepatic portal vein carries deoxygenated blood from the small intestine, spleen, and pancreas.