CARDIAC CYCLE >>> ANIMATIONS, TUTORIALS AND INTERACTIVE TESTS AND QUIZZES >>>

http://www.interactivephysiology.com/demo/systems/buildframes.html?cardio/cardcycl/01

http://www-medlib.med.utah.edu/kw/pharm/hyper_heart1.html

http://www.cvphysiology.com/Heart%20Disease/HD002.htm

http://www.jdaross.cwc.net/cardiac_cycle.htm

http://www.phschool.com/science/biology_place/biocoach/cardio1/cycle.html

HEART VALVE ACTION

http://www.heartcenteronline.com/myheartdr/common/articles.cfm?ARTID=187