This lesson will examine the structure and function of red blood cells (i.e., erythrocytes), how new red blood cells are produced, and the role of hemoglobin in transporting oxygen.

Background image of normal disc-shaped red blood cells from the University of Utah. Inset shows sickled red blood cells, curved and rigid, from the Virginia Medical College.

This review of what makes up human blood is easy to read and understand. There are guides to pronunciation and glossary links as well as a self quiz to check your understanding.

Find out about the characteristics and components of blood with informational text, diagrams, examples, and review questuons.

Understand how blood functions within the body and how it is broken down into various blood types.

An exploration of the different types of transfusions with a brief look at synthetic blood.

A comprehensive site that examines causes, risk factors, complications, treatment, prevention of anemia and more.

Thorough overview of iron deficiency. Includes information on symptoms, treatment, prevention, and much more.

Describes three nutritional deficiencies that can lead to anemia. Also provides reader with the names of several foods to eat to correct these deficiencies.