Histochemical and morphometrical ageing changes in human vocal cord muscles.


A histochemical and morphometrical study of thyroarytenoid and posterior cricoarytenoid human muscles was done in 43 human adults (38 males, 5 females) with ages ranging from 46 to 87 years. Vocal cord muscles were taken from laryngectomy specimens with carcinoma (25) and from autopsies (18), excluding those with neuromuscular diseases. In all cases the… (More)