2) Respiration Deep inspiration: thorax pressure venous returnt, pulmonary circulation clock wise rotation of heart make murmur of Tl. ts pl个 Expiration Valsalva maneuver: thorax pressure venous return, M of IhSST2) Respiration - Deep inspiration: thorax pressure venous return, pulmonary circulation clockwise rotation of heart make murmur of TI, TS ,PI - Expiration: - Valsalva maneuver: thorax pressure venous return M of IHSS