Video Results from YouTube.com
Published in : 2016-12-21 | by Operation Ouch
Subscribe to the Operation Ouch official channel! Click here: https://www.youtube.com/c/operationouch Today we are looking at our blood! Dr. Chris and Dr.
Published in : 2015-08-03 | by CrashCourse
Now that we've talked about your blood vessels, we're going to zoom in a little closer and talk about your blood itself. We'll start by outlining the basic ...