Canker Sore Say: KAN-kur This is a small mouth sore that's a big pain. Canker sores are open sores that have a white or yellowish coating and are usually about ¼ of an inch across. You might find them ...

The epiglottis is super for swallowing.Epiglottis Say: eh-pih-GLAH-tis The epiglottis is super for swallowing. It's the part of your body that flops down over the windpipe when you swallow to keep ...

A genetic condition is one that happens when a gene changes. Some genetic conditions can be inherited (passed from parents to their children). Genes are sections of DNA (deoxyribonucleic acid) that ...