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.
Eva Mendes has a lot of help for her 1-year-old daughter, Esmeralda! The 41-year-old Hitch star sat down with Wendy Williams on Wednesday, where she discussed why she and partner Ryan Gosling have elected to not hire a nanny. WATCH: Ryan Gosling and Eva Mendes Celebrate Esmeralda's First Birthday With Family Bash.