Part 1: The Heart (Cor) & Its Layers
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13 Terms
Cor
The heart
Apex Cordis
The pointed inferior tip of the heart, directed toward the left
Basis Cordis (Base)
The broad superior portion where major vessels enter and exit
Pericardium
The double-walled sac that encloses and protects the heart
Epicardium
The outer protective layer of the heart wall (visceral pericardium)
Myocardium
The thick, muscular middle layer responsible for pumping
Endocardium
The smooth inner lining of the heart chambers and valves
Atrium Dexter
The right upper chamber; receives deoxygenated blood from the body
Atrium Sinister
The left upper chamber; receives oxygenated blood from the lungs
Ventriculus Dexter
The right lower chamber; pumps deoxygenated blood to the lungs
Ventriculus Sinister
The left lower chamber; pumps oxygenated blood to the body
Interatrial Septum
The muscular wall separating the right and left atria
Interventricular Septum
The thick wall separating the right and left ventricles
