Heart-1

Heart-1 - and ascending aorta, anterior to SVC Fibrous...

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Heart is two pumps: Right (pulmonary) side – receives peripheral blood, pumps to lungs and back to heart Left (systemic) side – receives blood from lungs, pumps to periphery Each pump consists of an atrium and ventricle Atria receive blood and “pump” blood to ventricles Ventricles eject blood from heart Diastole – chambers fill with blood Systole – chambers contract Cardiac cycle - from the start of ventricular diastole to end of ventricular systole
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Transverse pericardial sinus - posterior to pulmonary trunk
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Unformatted text preview: and ascending aorta, anterior to SVC Fibrous skeleton of heart:-4 fibrous rings around valve openings-R/L fibrous trigone connecting the 4 rings-interatrial & interventricular septa Functions:-origin & insertion for myocardium-keeps valve openings patent-pathway for electrical conduction-electrical insulator for action potential so chambers contract independently Cardiac inhibitory nerves (parasympathetic) arise from CIC (Cardioinhibotory Center) Arise from CAC (Cardioacceleratory Center)...
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Heart-1 - and ascending aorta, anterior to SVC Fibrous...

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