<prompt> Hypoacusis is caused by paralysis of which of the following muscle ?mylohyoidtensor tympanitensor vili palatinimacula densa  <response>: Hypoacusis, i.e., paial deafness to low pitched sounds due to paralysis of tensor tympani muscle. REF : B D Chaurasias Human Anatomy , seventh edition , volume 4 , pg, no., 69. 