The part of the aorta that extends from the arch of the aorta to the diaphragm, and from which arises numerous branches that supply oxygenated blood to the chest cage and the organs within the chest.
descending trunk of arch of aorta +
diaphysis of femur +
diaphysis of fibula
diaphysis of metacarpal bone
diaphysis of metatarsal bone
diaphysis of radius
diaphysis of tibia
diaphysis of ulna +
dilated medial process of metacarpal IV
distal cartilage of external anterior process of basipterygium
distal cartilage of internal anterior process of basipterygium
distal cartilage of middle anterior process of basipterygium
distal cartilage of posterior process of basipterygium