Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Jan 19, 2015
•••SUBBABLE MESSAGE•••
TO : Phoebe and James McMullan FROM : Dad
Continue being awesome Phoebe & James from John & Hank!
***
You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content.
***
Today on Crash Course Anatomy & Physiology, Hank breaks down the parts and functions of one of your body's unsung heroes: your epithelial tissue.