'V' Wave in JVP is due to-
Ans. is 'c' i.e., Closure of tricuspid valveJugular venous pressure (JVP)* The variations in right atrial pressure are transmitted to the jugular veins, producing three positive waves (a, c and v) and two negative waves/descents (x and y).1) a-wave : It is presystolic 'positive' wave due to right atrial contraction (right atrial systole).2) x-descent: It a 'negative' wave due to right atrial relaxation.3) c-wave: This 'positive' wave is produced by bulging of tricuspid valve into right atrium during isovolumetric contration of right ventricle.4) v-wave: It 'positive' systolic wave resulting from increase in blood volume in vena cava during systole, when tricuspid valve is closed.5) y-descent (diatolic collapse): This 'negative' wave is due to tricuspid valve opening and rapid inflow ofbood into right ventricle.
Right atrial contraction
Right atrial relaxation
Closure of tricuspid valve
Isovolumetric relaxation
Heart, Circulation, and Blood