our crazy bodies I

I'm learning some fascinating stuff in my Anatomy/Physiology class. I thought I'd share some of my favorite tidbits along the way...everyone have time for useless trivia!

Arrector Pilli Muscles

tiny muscle fibers attached to each hair follicle which contract to make hairs stand on end, causing goose bumps. Next time you get cold, think about the several million teeny muscles at work!