right atrium
Blood receiving chamber
The right atrium is one of the heart's four chambers—the upper chamber on the right side that receives deoxygenated blood returning from the body through the superior and inferior vena cava.
From here, blood passes through the tricuspid valve into the right ventricle, which pumps it to the lungs.
The pacemaker cells in the right atrium set the heart's rhythm.
Cardiac blood compartment
- tricuspid valveThree-leafed heart structure
- superior vena cavaMajor vein entering heart above
- inferior vena cavaMajor vein to heart
- auricleExternal ear or atrial appendage
endocardium · myocardium · sinus node · annulus · chordae tendineae
Blood lacking oxygen molecules
- blood flowMovement through vessels
- cardiac cycleOne complete heart contraction-relaxation
- systoleHeart muscle contraction phase
- diastoleCardiac relaxation phase
preload · pulmonary circulation · jugular vein · cardiac output
Brief surge of charge
- depolarizationLoss of electrical gradient
- repolarizationMembrane voltage reset
- heart rhythmPattern of heartbeats
- sinus rhythmHeart's proper electrical timing
atrial fibrillation · arrhythmia · automaticity · cardioversion · ablation · ECG · electrocardiogram
heart chamber
Cardiac blood compartment
- tricuspid valveThree-leafed heart structure
- superior vena cavaMajor vein entering heart above
- inferior vena cavaMajor vein to heart
auricle · endocardium · myocardium · sinus node · annulus · chordae tendineae
deoxygenated blood
Blood lacking oxygen molecules
- blood flowMovement through vessels
- cardiac cycleOne complete heart contraction-relaxation
- systoleHeart muscle contraction phase
diastole · preload · pulmonary circulation · jugular vein · cardiac output
electrical impulse
Brief surge of charge
- depolarizationLoss of electrical gradient
- repolarizationMembrane voltage reset
- heart rhythmPattern of heartbeats
sinus rhythm · atrial fibrillation · arrhythmia · automaticity · cardioversion · ablation · ECG · electrocardiogram
- Circulatory Systemheart rate, blood, artery, veins, capillary
- heartheartbeat, heart attack, heart muscle, heart rate, heart failure
- cardiopulmonaryheart rate, lungs, blood pressure, circulation, breathing
- circulationblood, circulation, arteries, veins, bloodstream
- heart anatomymyocardium, endocardium, pericardium, ventricle, atria
- heart partsleft ventricle, atria, ventricles, upper chambers, lower chambers
right, rights, righteous, rightly, rightful, atrium, righteousness, unrighteous, rightmost