ABDOMINAL AORTA and INFERIOR VENA CAVA. Abdominal Aorta Extends from: Extends from:T12. To: To:L4.

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ABDOMINAL AORTA and INFERIOR VENA CAVA

Abdominal Aorta Extends from: Extends from:T12. To: To:L4.

Abdominal Aorta Branches: Branches: Three unpaired anterior visceral branches. Three paired lateral visceral branches. Five paired lateral abdominal wall branches. Three terminal branches (one unpaired).

Unpaired Anterior Visceral Branches Celiac trunk (artery): Celiac trunk (artery): Left gastric. Splenic.Hepatic.

Unpaired Anterior Visceral Branches Celiac trunk (artery): Celiac trunk (artery): Left gastric: To inferior esophagus. To lesser curvature of stomach: Travels in lesser omentum. Anastomosis: With right gastric from hepatic A.

Unpaired Anterior Visceral Branches Celiac trunk (artery): Celiac trunk (artery): Splenic artery branches: Short gastric arteries (6). Splenic arteries (6). Left gastroepiploic artery: Travels along greater curvature of stomach. Enters spleen at splenic hilum.

Unpaired Anterior Visceral Branches Celiac trunk (artery): Celiac trunk (artery): Hepatic branches: Cystic artery. Right gastric: Travels along lesser curvature of the stomach.

Unpaired Anterior Visceral Branches Celiac trunk (artery): Celiac trunk (artery): Hepatic branches: Gastroduodenal: Right gastroepiploic: Travels along greater curvature of the stomach. Superior pancreaticoduodenal: Travels along head of pancreas. Supplies duodenum and pancreas.

Unpaired Anterior Visceral Branches Celiac trunk (artery): Celiac trunk (artery): Hepatic branches: Right hepatic. Left hepatic.

Unpaired Anterior Visceral Branches Superior mesenteric artery: Superior mesenteric artery: Jejunal and ileal arteries. Inferior pancreaticoduodenal artery: Joins superior pancreaticoduodenal. Middle colic artery: To transverse colon. Arcades. Vasa recta. Windows.

Unpaired Anterior Visceral Branches Superior mesenteric artery: Superior mesenteric artery: Right colic artery: Supplies ascending colon. Arcades. Vasa recta. Windows.

Unpaired Anterior Visceral Branches Superior mesenteric artery: Superior mesenteric artery: Ileocolic artery: Terminal branch. Supplies ileum, cecum and ascending colon. Appendicular artery. Arcades. Vasa recta and windows.

Unpaired Anterior Visceral Branches Inferior mesenteric artery: Inferior mesenteric artery: Left colic: Supplies descending colon. Marginal artery: Arcades, vasa recta, windows.

Unpaired Anterior Visceral Branches Inferior mesenteric artery: Inferior mesenteric artery: Sigmoid arteries (2-3). Supply descending and sigmoid colon. Arcades, vasa recta, and windows. Superior rectal artery: Terminal branch. Supplies proximal rectum.

Paired Lateral Visceral Branches Suprarenal. Suprarenal. Renal: Renal: Gives off five segmental arteries. Testicular or ovarian. Testicular or ovarian.

Paired Lateral Abdominal Wall Inferior phrenic. Inferior phrenic. Lumbar (4 pairs). Lumbar (4 pairs).

Terminal Branches Common iliacs: Common iliacs: External iliacs: Become femoral arteries distal to inguinal ligament. Inferior epigastrics: Travel in lateral umbilical folds. Deep circumflex iliacs: Supply iliacus muscle and inferior anterolateral abdominal wall.

Terminal Branches Common iliacs: Common iliacs: External iliacs (reminder): Become femoral arteries distal to inguinal ligament: Superficial circumflex artery. Superficial epigastric artery. Internal iliacs. Median sacral Median sacral

Inferior Vena Cava From right and left common iliac veins: From right and left common iliac veins: Internal iliacs drain pelvis. External iliacs are continuations of femoral veins: Become external iliacs proximal to inguinal ligament.

Inferior Vena Cava Tributaries: Tributaries: Gonadal veins (testicular or ovarian): Dump into left renal vein on left). Renal veins. Suprarenal veins: Dump into left renal vein on left. Inferior phrenic veins. Hepatic veins: Right, left, middle.

Portal Vein Tributaries Superior mesenteric vein: Superior mesenteric vein: Middle colic vein (drains transverse colon). Right colic vein (drains ascending colon). Ileocolic vein (drains ileum, ileocecal junction, cecum, and ascending colon). Ileal vein (drains ileum). Right gastroepiploic vein (drains right aspect of greater curvature of stomach). Pancreaticoduodenal (drains duodenum and head of pancreas).

Portal Vein Tributaries Splenic vein: Splenic vein: Right gastric vein (lesser curvature of stomach). Left gastric vein (lesser curvature of stomach). Paraumbilical vein (umbilical region).