Anatomy and Physiology - Spend some time looking at the following sites :)

This is a fantastic interactive site.
http://library.thinkquest.org/2935/Natures_Best/Nat_Best_High_Level/Page_Shells/Skeletals_Shell.html

Lung
http://www.britannica.com/bcom/eb/article/6/0,5716,50566+1+493...
An encyclopedic explanation of the functions of the lung and its different parts.

The Lungs
http://tqjunior.thinkquest.org/4245/lung.htm
Created by youth for the ThinkQuest organization challenge, this page provides a description of lung makeup, function, and even a diagrammed lung in motion.

Surfing Inside the Human Body
http://library.thinkquest.org/J001614F/
This fun and creative site has been put together by three youth through the Think Quest Internet Challenge; it is a great resource for basic information about the human body and its systems.

http://www.jhbmc.jhu.edu/CARDIOLOGY/rehab/exercise.chd.html
Look here for information such as the benefits of regular exercise, guidelines for safe exercise, and how to calculate your target heart rate.

A Change of Heart: Interactive Heart
http://www.mcall.com/special/heart/health.htm
Look here to find a great rendition of the heart that will respond to your control. Click on a number and it will tell you what that part is. Useful for diagramming or labelling the heart.

The Heart: An Online Exploration
http://sln.fi.edu/biosci/heart.html
The Franklin Institute's online exploration of the heart. Anything you ever needed to know about the heart and cardiac system can be found here. The site also includes some information about other systems and aspects of the body.

The Heart: An Inquiry About the Heart
http://www.smm.org/studio3d/julie/hearthome.htm
This is a great page, especially in the visual sense; it contains videos of a heart transplant and implant. A 3d tour through the heart, external and internal images of the heart can also be found here.