Heart anatomy flashcards

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Twenty flashcards on heart anatomy and physiology: chambers, valves, conduction, sounds and the ECG.

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20 cards

Thickest heart chamber?: Left ventricle.
Valve between left atrium and ventricle?: Mitral valve.
Valve between right atrium and ventricle?: Tricuspid valve.
Where to listen to the aortic valve?: 2nd right intercostal space.
Where to listen to the mitral valve?: 5th intercostal space, midclavicular line.
S1 is the closing of?: Mitral and tricuspid valves.
S2 is the closing of?: Aortic and pulmonic valves.
Natural pacemaker?: Sinus (SA) node.
Where is the electrical delay between atria and ventricles?: AV node.
P wave represents?: Atrial depolarization.
QRS represents?: Ventricular depolarization.
T wave represents?: Ventricular repolarization.
Normal PR interval?: 0.12 to 0.20 seconds.
Normal QRS width?: Under 0.12 seconds.
Cardiac output equals?: Heart rate times stroke volume.
Preload is?: How much the ventricle fills before it contracts.
Afterload is?: The pressure the ventricle pumps against.
Main coronary arteries?: Left main (LAD and circumflex) and right coronary artery.
Fetal shunt between atria?: Foramen ovale.
Fetal shunt between pulmonary artery and aorta?: Ductus arteriosus.