Ballooning or widening of a weak portion of an artery is known as:

Angioplasty is the surgical repair of an artery where they use a balloon the repair the artery by removing the plaque that has clogged it up. 

1) the mayans built pyramids just like the egyptians. the mayans also used hieroglyphics like them.2) power was passed down by family. for example, if the father dies, the son would be the next king.3)they both built pyramids for their structures.4)the main crop for the mayans was maize.5)they also grew manioc, beans,  squash,  amaranth, and chile peppers.