This resource provides a look at the circulatory system of a frog in dissection.

A labeled diagram of the major veins and arteries in the human body.

Learn about the three basic layers of the vascular system by examining cell and tissue specimens from those layers.

This lesson will introduce the 11 organ systems of the body, giving a brief overview of their function. It is 2 of 2 in the series titled "Organ Systems."

This lesson will introduce the 11 organ systems of the body, giving a brief overview of their function. It is 1 of 2 in the series titled "Organ Systems."

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.

This site contains pictures of hearts that have some type of problem such as narrowing of the arteries and muscle damage from a heart attack. There is also a terrific picture of the coronary artery system that supplies the heart.

Fact Monster offers a brief summary of the human circulatory system, its organs, and function.

(1578-1657) English physician who published his treatise on the circulatory system in 1628.

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.