Common Iliac Artery Just to the left side of the body of the fourth lumbar vertebra, the abdominal aorta divides into two common iliac arteries. These again divide as they descend from the end of the aorta and each divides, between the last lumbar vertebra and the sacrum, into the external iliac artery, which supplies blood to much of the lower limbs, and the internal iliac artery, which supplies the viscera and the walls of the pelvis. Each common iliac artery divides into smaller branches to supply muscles and tissues in the ureter region and begins accessory to the renal arteries. Cricoid Cartilage The larynx (voice box) is composed primarily of muscles and cartilages that are bound together by elastic tissues. The cricoid cartilage lies below the thyroid cartilage and marks the lowermost portion of the larynx. Femoral Artery/Vein The femoral artery, which passes fairly close to the outer surface of the upper thighs, divides into smaller branches to provide blood to muscles and superficial tissues in the thigh. They also
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This note was uploaded on 11/22/2011 for the course BSC BSC1085 taught by Professor Sharonsimpson during the Fall '10 term at Broward College.