Curated OER
Kids Health: Heart and Circulatory System
The circulatory system and how it functions are explained. An interactive diagram shows how blood flows through the heart. Disorders of the heart and the circulatory system are also described.
PBS
Nova Online: Map of the Human Heart
This PBS site has a concise explanation of how the heart works. There is also a moving diagram of a working heart.
University of Utah
University of Utah: Cardiovascular Pathology Index
This site features a detailed index of photographs for cardiovascular pathology. You can see what a normal human heart looks like and what a sick one looks like too. Come and check it out.
BBC
Bbc: Ks2 Bitesize: Science: Circulation
Background information review of key concepts about the circulatory system, including the heart and pulse. Tis site provides diagrams, activities, and quiz questions.
Earth Life
Earth Life: A Bird's Heart and Blood
A very good site about the circulatory system of a bird. It is reader friendly, and includes a fair amount of information. Good diagram of the circulatory system.
Other
World Invisible: The Human Circulatory System: Blood Circulation
A labeled diagram of the major veins and arteries in the human body.
Other
Digital Frog: Frog Circulation
A digital diagram from Digital Frog of the circulatory system of a frog. Very nice, and very fake since it is not a real frog.
BBC
Bbc: Gcse Bitesize: Cardiovascular System
A great overview of the Cardiovascular System, its structure and functions. See diagrams of the heart, and learn how the blood flows through the heart.