Cadaver like position of vocal cords is seen in
Recurrent Laryngeal Nerve paralysis:If both recurrent laryngeal nerves are interrupted, the vocal cords lie in a cadaveric position in between abduction and adduction and phonation is completely lost.When only one recurrent laryngeal nerve is affected, the opposite vocal cord compensates for it and phonation is possible but there is hoarseness of voiceSuperior Laryngeal Nerve paralysisIt divides into external and internal laryngeal nerves. External laryngeal nerve supplies cricothyroid and inferior constrictor and internal laryngeal nerve supplies mucous membrane of the larynx upto the level of vocal folds:Asymmetric vocal cord tensionProduces diplophoniaLoss of vocal fold tension (lowers pitch of voice)Inaccurate vocal cord appositionParalysed side slightly shoened and bowedMay be depressed below level of normal sideRotation of AP axis of vocal cordsPosterior commissure points to side of paralysisLoss of laryngeal sensation and increased risk of aspiration
Both superior laryngeal nerve palsy
Both recurrent laryngeal nerve palsy
Both external laryngeal nerve palsy
Both internal laryngeal nerve palsy