Cardiology: Heart Anatomy, Electrical System, and Cardiac Function

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Last updated 4:56 AM on 4/8/26
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11 Terms

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3 layers of heart

Epicardium, Myocardium, Endocardium

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Septum

Separates left and right heart

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SA node

Natural pacemaker

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AV node

Delays signal

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Purkinje fibers

Spread signal through ventricles

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Stroke volume

Blood per beat

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End-diastolic volume (EDV)

Volume before contraction

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End-systolic volume (ESV)

Volume after contraction

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Preload

Stretch before contraction

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Afterload

Resistance to pumping

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Contractility

Strength of contraction