Your Body Battles a Skinned Knee

A skinned knee is more than just a minor injury-it's a battleground! This book takes the reader through all of the body's behind-the-scenes work that prevents harmful germs from entering the body through the scrape. For example, nerve cells send a message to the brain to report the injury. Platelets bind together, and fibrin threads form a clot to help stop the bleeding. Gradually, skin cells make new skin to replace the skin that was injured. Glossary. Further reading. Web sites. Index. Photomicrographs. Full-color artwork.