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Tutorials and quizzes on the anatomy and physiology of the circulatory or cardiovascular system, using interactive animations and diagrams. Looking for Quizzes? Click Here
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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.
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.
Phases of the Cardiac Cycle
Review how the atrioventricular and semilunar valves open and close in a full cardiac cycle in this interactive tutorial.
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.
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.
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.
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.
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.
Blood Cells & Formed Elements of the Blood
Illustrated review of the various cells and cell fragments that compose the formed elements of the blood (RBCs, WBCs & Platelets).
How Blood Type is Determined
The blood type test is used to determine which antigenic molecules are present on RBCs. Review the procedures of the test in this interactive tutorial.