we conclude that 1 ) diffusional support is more effective in thinner muscular arteries than in the aorta , 2 ) both luminal and abluminal sources of nutrition are important , particularly for the aorta , 3 ) vasa vasorum appear to be important for adequate diffusional support of the thoracic aortic media , and 4 ) medial vasa vasorum may be more effective than adventitial vasa vasorum in nourishing the aorta .
C0225342
adventitial
C0042367
vasa vasorum