Lub Heart Sound ~repack~ ◉ [ LEGIT ]

Medical professionals use auscultation—the act of listening with a stethoscope—to evaluate the quality of the "lub." S1 has distinct physical properties that differentiate it from its counterpart, the "dub" (S2):

S1 is caused primarily by the :

The "lub" sound is primarily caused by the simultaneous closure of the : the mitral valve on the left side and the tricuspid valve on the right. lub heart sound