Anatomist classify bones into one of five shape categories classify each bone into the most appropriate category

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;

yes it is weird but true

i think this picture will you.

"it built up in the atmosphere"

i think thats it, idk, i tried looking for this exact q& a for grad. and idk if i got this question right or sorry if im wrong