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Anatomy — The Heart

Structures and function of the cardiovascular system

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heartrate_hero 15 terms Jan 4, 2026
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Terms 15

1
Right Atrium
Receives deoxygenated blood from the body via vena cava
2
Right Ventricle
Pumps deoxygenated blood to lungs via pulmonary artery
3
Left Atrium
Receives oxygenated blood from the lungs via pulmonary veins
4
Left Ventricle
Pumps oxygenated blood to the body via the aorta; thickest chamber
5
Aorta
Largest artery; carries oxygenated blood from left ventricle to body
6
Pulmonary Artery
Carries deoxygenated blood from right ventricle to lungs
7
Pulmonary Veins
Carry oxygenated blood from lungs to left atrium
8
Vena Cava
Large veins returning deoxygenated blood to the right atrium
9
Tricuspid Valve
Between right atrium and right ventricle; prevents backflow
10
Mitral Valve
Between left atrium and left ventricle; bicuspid valve
11
Aortic Valve
Controls blood flow from left ventricle into aorta
12
Sinoatrial (SA) Node
Natural pacemaker of the heart; initiates electrical signal
13
Pericardium
Protective sac surrounding the heart
14
Systole
Phase of heartbeat when ventricles contract and pump blood
15
Diastole
Phase when the heart relaxes and fills with blood