abdominal segment blood vessel

An abdominal segment blood vessel (known in anatomical terminology as abdominal segment of trunk blood vessel) is any artery, vein, or capillary that is part of the abdominal segment of the trunk. These vessels supply blood to and drain blood from all structures within the abdominal region.

These blood vessels are distributed throughout the entire abdominal segment of the trunk, including within the abdominal wall, among the abdominal organs, and in the retroperitoneal space. Major vessels include the abdominal aorta and inferior vena cava.

Abdominal segment blood vessels deliver oxygenated blood and nutrients to all abdominal organs and tissues, and return deoxygenated blood and metabolic waste products back to the heart. They also transport absorbed nutrients from the intestines via the portal circulation to the liver.

Atherosclerosis, aneurysm, thrombosis, and trauma can all affect abdominal blood vessels. Aortic aneurysm rupture and mesenteric ischemia are life-threatening emergencies arising from abdominal vascular disease.

Major arteries include the abdominal aorta and its branches (celiac trunk, superior and inferior mesenteric arteries, renal arteries, and iliac arteries). On the venous side, the inferior vena cava and the portal venous system (including the superior and inferior mesenteric veins) are principal vessels.