virtual tour

http://medtropolis.com/virtual-body/

kids health

http://kidshealth.org/kid/htbw/heart.html

animation

http://www.pbs.org/wgbh/nova/body/map-human-heart.html

blood cells

http://learn.fi.edu/learn/heart/blood/red.html

LABELING

http://sciencelearn.org.nz/Contexts/See-through-Body/Sci-Media/Animation/Label-the-heart