- Home >
- Circulatory System
Tutorials and quizzes on the anatomy and physiology of the circulatory system or cardiovascular system, using interactive animations and diagrams. Looking for Quizzes? Click Here
Most read articles
The Heart Chambers and Their Functions
Review the four chambers of the heart as well as other features in this interactive tutorial and test yourself in the quiz.
General Composition of Blood
When blood separates it splits into three sections: The red blood cells, the “buffy coat”, and plasma. Each section is composed of various elements.
The cardiac arteries run along the surface of the heart, carrying oxygenated blood to the heart muscle. Review the cardiac veins and test your knowledge.
Major Systemic Arteries
Review the major systemic arteries of the body including those of the neck, arm, forearm, abdomen, pelvis, thigh, and leg in this interactive tutorial.
Phases of the Cardiac Cycle
Review how the atrioventricular and semilunar valves open and close in a full cardiac cycle in this interactive tutorial.
The Location, Size, and Shape of the Heart
Review the location of the heart as well as it’s size and shape in this interactive tutorial and test your knowledge in the quiz.
Major Blood Vessels of the Heart
The major blood vessels of the heart consist of large arteries and veins that transport blood to and from the different circulatory systems of the body.
Number of Red Blood Cells in the Blood
Review the number of red blood cells in blood that contains either, high, low, or normal RBC count in this interactive tutorial.
General Structure and Functions of Red Blood Cells
RBCs are small, disc-shaped cells that circulate in the blood stream. Review the general structure and function of an RBC in this interactive tutorial.
Heart Valve Movement
The four heart valves open and close in response to pressure changes that occur in the ventricles. Review the movement of the valves in this tutorial.