The Right Ventricle

• • Oxygen poor blood flows from the right atrium through the right AV valve and into the right ventricle. Blood flows from the right ventricle into the pulmonary trunk to enter the pulmonary circuit.
• Oxygen poor venous blood travels from the right atrium into the right ventricle
• Blood passes through opening guarded by three fibrous flaps between atrium and ventricle. The flaps are cusps
• Cusps form the right atrioventricular (AV) valve, or tricuspid valve,
• Free edges of cusps attached to connective tissue fibers called chordae tendineae
• Fibers arise from papillary muscles, which are cone shaped muscular projections of the inner surface of the right ventricle