Most axons of vertebrates are enclosed in a myelin sheath, which increases the speed of impulse transmission; some large axons may transmit impulses at speeds up to 90 metres (300 feet) per second.
Lynda Carter Wonder Woman's STILL SUPER HOT. 61-year-old Lynda Carter -- famous for playing Wonder Woman on the '70s show -- must really have super powers ... because she's still scorchin' hot.
Orange Is The New Black star Taryn Manning looks worryingly thin as she shows off VERY slender legs in Daisy Dukes. Taryn Manning looked worryingly thin during her latest outing. The 36-year-old star appeared to be rather gaunt as she arrived for a hosting gig in Las Vegas on Friday.