You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Cadaveric position of vocal cords is seen in: and explain in detail?
In bilateral recurrent and superior laryngeal nerve palsy all the laryngeal muscles are paralysed and both cords lie in the cadaveric position i.e 3.5mm from the midline. There is also total anaesthesia of the larynx. In bilateral recurrent laryngeal nerve palsy, vocal cords lie in median or paramedian position due to unapposed action of cricothyroid muscles. In unilateral paralysis of superior laryngeal nerve, there is shoening of the cord with loss of tension. The paralysed cord appears wavy due to lack of tension.