2007NSC Laboratory Workbook – Lab 4 13 (b) Abdominal artery • general features: begins at the thoracic diaphragm; terminates by dividing into the common iliac arteries; numerous arteries arise from the abdominal aorta anteriorly, laterally and posteriorly; Examine various torso models as well as cadaveric material and identify the following features; Anterior branches of the abdominal aorta: • coeliac artery/trunk: single artery; arises at the vertebral level of ____________; terminal branches include the splenic artery, common hepatic artery, and the left gastric artery that primarily supply the spleen, liver and the stomach, respectively; also refer to stomach model 13.20*; • superior mesenteric artery: single artery; arises at the _____________ vertebral level; supplies most of the small intestine and the proximal half of the large intestine; • inferior mesenteric artery: single artery; arises at the _____________ vertebral level; supplies most of the distal half of the large intestine; Lateral branches of the abdominal aorta: • renal arteries: usually paired arteries (left and right); supply the kidneys; • common iliac arteries: paired (right and left); terminal branches of the abdominal aorta; begin at the vertebral level of _____________; each gives rise to an internal iliac artery and an external iliac artery; • internal iliac artery: supplies the organs that are located in the pelvic cavity; • external iliac artery: supplies structures of the lower limb by becoming continuous with the femoral artery when it passes into the anterior thigh region deep to the inguinal ligament. answers only

Which paired arterial branches emerge from the sides of the descending abdominal aorta?

Which are branches of the internal iliac artery?

The three arteries emerging from the celiac trunk are the ______.

MAJOR ARTERIES and VEINS The aorta is the largest artery in the human body and extends from the heart to the vertebral level of L4 within the abdomen. It supplies all parts of the body excluding the lungs. For descriptive purposes it is subdivided by the thoracic diaphragm into the thoracic aorta and the abdominal aorta. Arteries do not contain valves. Numerous branches arise from the aorta. (a) Thoracic artery • general features: proximal segment of aorta which is located within the thorax; continuous with the abdominal aorta as it passes through the thoracic diaphragm; Examine various torso and head models and identify the following features; • subdivisions of the thoracic aorta: ascending aorta, aortic arch and the descending aorta; • right and left coronary arteries: only branches of the ascending aorta; arise immediately superior to the aortic semilunar valve; supply the heart wall; • aortic arch: continuation of the ascending aorta and begins as the thoracic aorta curves posterolaterally on the left side of the mediastinum; contains 3 collateral branches (from right to left): brachiocephalic trunk, left common carotid artery and left subclavian artery; • brachiocephalic trunk: first branch of the aortic arch; terminally branches into the right subclavian artery and the right common carotid artery (terminally divides into right external and internal carotid arteries); • left common carotid artery: second branch of the aortic arch; terminally branches into left internal and left external carotid arteries in the superior region of the lateral neck; • left subclavian artery: third branch of the aortic arch; supplies structures of the left ______________________________; • posterior intercostal arteries: multiple paired branches of the descending thoracic aorta (only branches of descending part); supply and course through the intercostal spaces of the thoracic wall in the costal grooves of ribs

Splenic artery arises from celiac trunk