Thorax - transverse sectionYou selected: descending aortaBlood exiting the left side of the heart enters the aorta - the largest artery in the body. The carotid arteries to the head, and subclavian arteries to the arms branch off the aortic arch. The aorta (shown here) then descends through the abdomen until it splits into the iliac arteries which supply blood to the legs.lungs | ribs | right atrium | left atrium | right ventricle | left ventricle | serratus anterior | latissimus dorsi | erector spinae | pectoralis major | Information Module Name: thorax Module Title: Thorax - transverse section Image Info: Gross specimen. Created by: Lynn Bry Contact Email:bryl@medicine.wustl.edu Last modified: Dec 12th, 1996 Created with Annotation 1.0 |