Heart Sounds and Their Characteristics

At the 2nd right costo-sternal junction at right sternal border

At the left lower end of sternum

At the left 5th intercostal space in mid-clavicular line (correct)

At the right 5th intercostal space in mid-clavicular line

Early rapid ejection phase

Isovolumetric contraction phase

Isovolumetric relaxation phase (correct)

Late ventricular ejection phase

Left ventricular ejection ending before right ventricular ejection

Sudden closure of A-V valves

Sudden closure of semilunar valves (correct)

Aortic valve closing before pulmonary valve

<p>Decreased intrathoracic pressure affecting pulmonary valve closure</p> Signup and view all the answers

<p>Second heart sound (S2)</p> Signup and view all the answers

<p>At the left lower end of sternum</p> Signup and view all the answers