National Health Museum
Access Excellence: The Heart and the Circulatory System
Access Excellence offers detailed information, including diagrams and photos, about the anatomy of the heart and its central role in the circulatory system.
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.
Other
World Invisible: The Human Circulatory System: Blood Circulation
A labeled diagram of the major veins and arteries in the human body.
Texas Heart Institute
Texas Heart Institute: Anatomy of the Heart and Cardiovascular System
Overview of the cardiovascular system with labeled diagrams and reviews of the heart, torso, arm, leg, and blood, available through the links on the right.
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.
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.
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.
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.
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.
Texas Heart Institute
Texas Heart Institute: Heart Information Center: Anatomy of the Heart
One-page overview containing a detailed labeled diagram of the anatomy of the heart including the valves, conduction system, and circulatory system.