<prompt> Wagner and Grossman theory is related toPalatal palsyVocal cord palsyFacial palsyHypoglossal palsy  <response>: Wagner and Grossman hypothesis which states that cricothyroid muscle which receives innervation from superior laryngeal nerve keeps the cord in paramedian position due to its adductor function. Ref: PL Dhingra Textbook of Ear, Nose and Throat, Edition 7, page - 338 