From the right atrium the blood will flow through a one-way valve into the right ventricle.  That valve has two names.  The first is the Right Atrioventricular Valve because it is found on the right side of the heart between the atrium and the ventricle.  The second name for this valve is the Tricuspid Valve because it has three cusps.  There are two other valves in the heart that have three cusps.  However, this is the only one known as the Tricuspid valve.  Also, do not intend to count the cusps to identify the Tricuspid. Many of the models and charts are misleading regarding the number of cusps.  You should know it as the Tricuspid Valve because it is found between the right atrium and ventricle.

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