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Internal Heart. Interatrial Septum Separates Atria Interventricular Septum Separates Ventricles. Internal Heart. Atrioventricular (AV) Valves Connects Right Atrium to Right Ventricle & Left Atrium to Left Ventricle Permits blood flow in ONE DIRECTION from Atria to Ventricle
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Internal Heart • Interatrial Septum • Separates Atria • Interventricular Septum • Separates Ventricles
Internal Heart • Atrioventricular (AV) Valves • Connects Right Atrium to Right Ventricle & Left Atrium to Left Ventricle • Permits blood flow in ONE DIRECTION from Atria to Ventricle • Atrium to Ventricle
Internal Heart (Right Side) • Right Atrium • Receives blood form Body with CO2 • Superior Vena Cava • Receives blood from Head, Neck, Upper Limbs & Chest • Inferior Vena Cava • Receives blood from Trunk & lower Limbs
Internal Heart (Right Side) • Right Ventricle • Pumps blood with CO2 to lungs • Chordae Tendineae • Edges attached to AV Valve • Papillary Muscles • Attached to Chordae Tendineae • Prevents AV Valves from opening backwards
Internal Heart (Right Side) • Right Atrioventricular (AV) Valve • Tricuspid Valve • 3 cusps • Opens from Right Atrium to Right Ventricle • Prevents backflow
Internal Heart (Left Side) • Left Atrium • Receives blood from lungs with O2 • Blood gathers in Left & Right Pulmonary Veins • Pulmonary Veins deliver blood to Left Atrium • Blood from Left Atrium passes to Left Ventricle through Left Atrioventricular Valve
Internal Heart (Left Side) • Left Atrioventricular (AV) Valve • Bicuspid Valve OR Mitral valve • Two- cusped valve
Internal Heart (Left Side) • Left Ventricle • Pumps blood with O2 to body • Holds the same Volume as the Right Ventricle • Left Ventricle is: • LARGER • Muscle is THICKER & more POWERFUL
Arch of Aorta External Heart (Anterior) Pulmonary Artery Superior Vena Cava Pulmonary Trunk Right Auricle / Right Atrium Left Auricle/ Left Atrium Base of the Heart Coronary Vessels Apex of the Heart Interventriclular Sulcus Myocardial Blood Flow