#cardiology notes

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Heart

-- muscular organ

-- two pumps

-- one right pump and one left pump

-- left pump receives oxygenated blood from the lungs

-- oxygenated blood is sent through the body by the left pump

-- the left pump is stronger than the right pump

-- right pump receives deoxygenated blood from the body

-- deoxygenated blood is sent to the lungs to drop off carbon dioxide and pick up oxygen

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Ventricles

-- separated from the atria by the atrioventricular septum

-- right and left ventricles are separated by the interventricular septum

-- within the ventricles, two distinct muscle formations exist      -- trabeculae carnae      -- papillary muscles

-- trabeculae carnae are internal ridges

-- papillary muscles are finger-like projections

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Heart Anatomy

Pericardium -- the pericardial sac

Fibrous -- tough fibrous layer -- prevents over-distention -- connects heart to thoracic cavity -- acts as an anchor

Serous -- thin layer -- transparent

Parietal -- lines the fibrous outer layer

Visceral -- the epicardium -- covers the heart surface

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