Sentences with phrase «by lub»
Not exact matches
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The lub - dub sound is made by the heart valves closing as blood exits the heart chamber.
The sounds of the normal heartbeat (the typical «lub - dub») are generated by closure of the AV valves at the onset of contraction (i.e. the «lub» sound) and closure of the semi-lunar valves at the onset of relaxation (i.e. the «dub» sound).