Find out about the genetic blood disorder, sickle cell anemia, in this short narration. [0:59]

This lesson will identify the cause and effects of various blood disorders. [5:21]

Learn about the pathophysiology of anemia. [1:18]

Learn what is essential thrombocythemia as well as how to identify its signs and symptoms, diagnose it, and treat it. By Raja Narayan. Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content...

A video [7:38] that explains what leukemia is, how it affects blood and bone marrow, and some common symptoms.