Closure of tricuspid and bicuspid valves during ventricular contraction produces: Circulatory System Physiology Mcqs October 19, 2019 BILAL KHATTAK0 A.Low-pitched sound called ‘lubb’ B.High pitched sound called ‘dup’ C.First ‘lubb’ and then ‘dup’ D.None of these Related Mcqs: At the end of ventricular systole the closure of semilunar valves of pulmonary and systemic aortae produces a sound called: Which of the following valves in the heart of rabbit is tricuspid: Switching of a lamp in house produces noise in the radio. This is because switching operation produces __________? Noise is _______________. A concrete wall generally Porous materials generally If a centrifugal pump is noisy in operation, the cause may be________________? Accounstical materials Spleen produces RBCs in embryo but adult it produces: Bicuspid valve is also called: