Physiology Cardiovascular system e3721bd2 &;V' wave in JVP is due to A Atrial contraction B Mitral valve closure C Atrial relaxation D Tricuspid valve closure High-Yield Explanation The V wave mirrors the rise in atrial pressure before the tricuspid valve opens during diastole.Ref: Ganong&;s Review of medical physiology, 25th edition.Pg no. 542