Heart Valves and Sounds

heart sound created by the closure of the AV valves at the beginning of ventricular contraction

S1

the first heart sound (lubb)

S1

heart sound created by the closure of the semilunar valves at the beginning of ventricular relaxation

S2

exit valve that sees only oxygenated blood

aortic valve

semilunar valve through which blood leaves the left ventricle

aortic valve

valve that prevents the backflow of blood into the left ventricle

aortic valve

AV valve between the left atrium and the left ventricle

bicuspid valve

called the mitral valve

bicuspid valve

entrance valve that sees only oxygenated blood

bicuspid valve

valve that prevents the backflow of blood from the left ventricle

bicuspid valve

tough bands that attach the AV valves to the ventricular walls

chordae tendineae

extra heart sounds (S3, S4) that sound like a racing horse

gallop rhythm

leaky valve that allows backflow of blood

incompetent valve

abnormal heart sounds caused by valvular disease

murmurs

exit valve that sees only unoxygenated blood

pulmonic valve

semilunar valve through which blood leaves the right ventricle

pulmonic valve

valve that prevents the backflow of blood from the pulmonary artery

pulmonic valve

refers to the narrowing of a valve

stenosis

atrioventricular valve on the right side of the heart

tricuspid valve

entrance valve that sees only unoxygenated blood

tricuspid valve