Neuromuscular Spindles in Intrinsic Muscles of a Human Larynx In an effort to determine the possible distribution of neuromuscular spindles in the human larynx, a histologic examination of the adductors and tensors of the vocal folds was undertaken. The muscles examined were thyroarytenoid, interarytenoid, lateral cricoarytenoid, and cricothyroid. Each contained several spindles, except for cricothyroid, in which no spindle ... Research Article
Research Article  |   September 01, 1971
Neuromuscular Spindles in Intrinsic Muscles of a Human Larynx
 
Author Affiliations & Notes
  • R. J. Baken
    Teachers College, Columbia University, New York
  • Charles R. Noback
    College of Physicians and Surgeons, Columbia University, New York
Article Information
Research Articles
Research Article   |   September 01, 1971
Neuromuscular Spindles in Intrinsic Muscles of a Human Larynx
Journal of Speech, Language, and Hearing Research, September 1971, Vol. 14, 513-518. doi:10.1044/jshr.1403.513
History: Received March 6, 1970
 
Journal of Speech, Language, and Hearing Research, September 1971, Vol. 14, 513-518. doi:10.1044/jshr.1403.513
History: Received March 6, 1970

In an effort to determine the possible distribution of neuromuscular spindles in the human larynx, a histologic examination of the adductors and tensors of the vocal folds was undertaken. The muscles examined were thyroarytenoid, interarytenoid, lateral cricoarytenoid, and cricothyroid. Each contained several spindles, except for cricothyroid, in which no spindle structures could be identified. The spindles observed ranged from 1200 to 3600 µ in length and had from three to nine intrafusal fibers; all showed classic morphology. Absence of classical neuromuscular spindles in the cricothyroid muscle may be related to other unique characteristics of this muscle.

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