Barbara Tasch @ Here?s How Your Heart Actually Pumps Blood - TIME
We never think about it. But, if it stops we're done for.
[ame=http://www.youtube.com/watch?feature=player_embedded&v=ruM4Xxhx32U]How the heart actually pumps blood - Edmond Hui - YouTube[/ame]
We never think about it. But, if it stops we're done for.
[ame=http://www.youtube.com/watch?feature=player_embedded&v=ruM4Xxhx32U]How the heart actually pumps blood - Edmond Hui - YouTube[/ame]