What animal has the longest lifespan?​

Bowhead whale has the longest lifespan.

Explanation:

The longest living mammal is the bowhead whale, which can live up to 200 years. Also known as the Arctic whale, this animal is big, and lives in cold waters so its metabolism is slow. The record age for a bowhead is 211 years.

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