Other
Dr. Saul: Biology in Motion
This interactive site provides animations and activities in several areas of physiology. The images are simple, but clear. The accompanying text provides a good description of the process being shown.
Other
Everyday Health: Hypothyroidism
Information about the causes, risk factors, symptoms and treatment of hypothyroidism.
Mayo Clinic
Mayo Clinic: Graves' Disease
This site from the MayoClinic.com provides a great overview of the form of hyperthyroidism known as Graves' disease. The sections in the article include signs and symptoms, causes, screening, diagnosis, treatment, and self-care.