Internal Mammalian Heart

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Internal view of mammalian heart right pulmonary artery - Blood vessel taking deoxy genated blood away from the heart to the lungs Semilunar valves -Valves that prevent blood re-entering. the heart from the arteries Superior Vena Cava Blood vessel taking deoxygenated blood to the heart from the body Right atrium -The heart chamber the deoxygenated blood enters via the vena cava Sino-atrial node (SAN) region of the heart that initiates a wave of excitation that triggers the contraction of the heart Inferior vena cava Blood vessel taking deoxygenated blood to the heart from the body Tricuspid valve Atrioventricular valve Valves between the atria and the ventricles, which ensure that blood flows in the correct direction Right Ventricle The heart Chamber that pumps deoxygenated blood to the into the pulmonary artery aorta Blood vessel taking oxygenated blood away from the heart to the body left pulmonary artery -blood vessel taking deoxygenated blood away from the heart to the lungs Apex Interventricular Septum Inner dividing wall of the heart to prevent mixing of oxygenated and deoxygenated blood pulmonary vein - Blood vessel taking Oxygenated blood from the lungs to the heart left atrium The heart, Chamber Oxygenated blood the enters via the pulmonary vein tendinous cords Bicuspid valves Atrioventricular valve (AV valve) - Valves between the atria and the ventricles, which ensure that blood flows in the correct direction Left ventricle - The heart chamber that pumps Oxygenated blood into the aorta Left ventrical wall thick muscle Cardiac muscle -Specialised muscle found in the walls of the heart Chambers Atrioventricular node (AVN) Stimulates the ventricles to contract after...

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