Nervous system of a squid

Caribbean reef squid: Sepioteuthis sepioidea, Cephalopods: Cephalopoda, Invertebrates, Marine Life, Mollusks: Mollusca, copyrighted, horizontal, landscape, macro, marine, ocean, underwater, underwater photo

Squid species have nervous systems that contain some of the largest neurons found in nature. Scientists study the nerve impulses in squids in an effort to understand such mammalian diseases as multiple sclerosis, Alzheimer’s and Parkinson’s.