Features of the Heart

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Last updated 3:05 PM on 10/7/26
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17 Terms

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Size

Size of a fist

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Location

Mediastinum

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Base

TOP: where all the blood vessels enter and exit

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Apex

BOTTOM: point of maximal intensity

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Pericardium

Double walled fibroserous sac

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Fibrous Pericardium

Fx: protects, anchors. Tough connective tissue.

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Serous Pericardium

2 layers: Parietal (lines int. Surface of fibrous pericardium) & Viscerol (lines surface of the heart)

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Pericardial Cavity

Between parietal and visceral layers of Serous pericardium. Contains serous fluid.

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Serous Fluid

Lubricates; allows membranes to glide over each other

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Epicardium

OUTER, aka: visceral layers of SP, serous membrane that covers heart surface

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Myocardium

MIDDLE, bulk of the heart, cardiac muscle and fibrous skeleton of heart

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Endocardium

INNER, lines heat chambers, covers connective tissue valves and large blood vessels that enter and exit the heart

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Valves

Prevent back flow; two sets within the heart

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AV Valves

R: Tricuspid Valve L: Mitral Valve


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Semilunar Valves

R; Pulmonary semilunar L: Aortic semilunar


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Atria

Top charmers of the heart

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Ventricles

Bottom chambers of the heart. Presence of chordinae tendonae