When resting, blood goes from the heart to the lungs and back in about six seconds. An animation of the heart starts simply by showing blood flow through the two halves. It builds in complexity slowly over the course of five slides,...

This resource presents brief information defining a heart attack. The article also contains many links to related topics and publications in English and Spanish.

Designed for medical students, this site gives a detailed description of the sounds of the heart and lungs, including disorders, while playing read audio of those sounds with each description. Suitable for upper level high school...