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Motor End-plate Distribution in the Human Interarytenoid Muscle FREE

James Freije, MD; Leslie T. Malmgren, PhD; Richard R. Gacek, MD
[+] Author Affiliations

Accepted for publication June 10, 1986.

Reprint requests to Department of Otolaryngology and Communication Sciences, State University of New York-Health Science Center, 766 Irving Ave, 156 Weiskotten Hall, Syracuse, NY 13210 (Dr Malmgren).


Arch Otolaryngol Head Neck Surg. 1987;113(1):63-68. doi:10.1001/archotol.1987.01860010067017
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• Histochemical and computer graphic techniques were used to determine the distribution of neuromuscular junctions in the human interarytenoid (IA) muscle. The motor end-plates of four IA specimens obtained from normal postmortem larynges were visualized using an acetylcholin-esterase stain. The three-dimensional distribution of motor end-plates was later reconstructed using computer graphics. The motor end-plates in the IA were found to be distributed in an inverted "Y" configuration. A broad band of end-plates was found at the midpoint of the muscle fibers in the superior and middle aspect of the muscle. This band divided obliquely in a lateral direction toward the inferior border of the muscle. This pattern of motor end-plate distribution is possibly consistent with the bilateral innervation of the IA by the recurrent laryngeal nerves.

(Arch Otolaryngol Head Neck Surg 1987;113:63-68)

REFERENCES

Rueger RS:  The superior laryngeal nerve and the interarytenoid muscle in humans: An anatomical study . Laryngoscope 1972;;82:2008-2031.
Williams AF:  The nerve supply of the laryngeal muscles . J Laryngol Otol 1951;;65:343-348.
Rosen M, Malmgren LT, Gacek RR:  Three-dimensional computer reconstruction of the distribution of neuromuscular junctions in the thyroarytenoid muscle . Ann Otol Rhinol Laryngol 1983;;92:424-429.
DeVito M, Malmgren LT, Gacek RR:  Three-dimensional computer reconstruction of the neuromuscular distribution in the human cricothyroid muscle . Arch Otolaryngol Head Neck Surg 1985;;111:110-113.
Gambino D, Malmgren LT, Gacek RR:  Three-dimensional computer reconstruction of the neuromuscular distribution in the human posterior cricoarytenoid muscle . Laryngoscope 1985;;95:556-560.
Freije J, Malmgren LT, Gacek RR:  Motor end-plate distribution in the human lateral cricoarytenoid muscle . Arch Otolaryngol Head Neck Surg 1986;;112:176-179.
McIsaac G, Kiernan JA:  Complete staining of neuromuscular innervation with bromindigo and silver . Stain Technol 1974;;49:211-214.
Silver A:  The Biology of the Cholinesterases , in Neuberger A, Tatum EL (eds): Frontiers of Biology . Amsterdam, North-Holland Publishing Co, 1974;, vol 36, pp 470-471.
Falen SW, Packard DS Jr:  Computer-assisted stereoscopic reconstruction of biological tissues . Proc Natl Comput Graph Assoc 1982;; 2:995-1003.
Warwick R, Williams P: Gray's Anatomy , ed 36. Philadelphia, WB Saunders Co, 1980;, pp 524, 1235-1236.
Vogel PH:  The innervation of the larynx of man and the dog . Am J Anat 1952;;90:427-440.
Christensen E:  Topography of terminal motor innervation in striated muscle from stillborn infants . Am J Phys Med 1959;;38:65-78.
Aquilonius SM, Askmark H, Gillberg PG, et al:  Topographical localization of motor endplates in cryosections of whole human muscles . Muscle Nerve 1984;;7:287-293.

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Rueger RS:  The superior laryngeal nerve and the interarytenoid muscle in humans: An anatomical study . Laryngoscope 1972;;82:2008-2031.
Williams AF:  The nerve supply of the laryngeal muscles . J Laryngol Otol 1951;;65:343-348.
Rosen M, Malmgren LT, Gacek RR:  Three-dimensional computer reconstruction of the distribution of neuromuscular junctions in the thyroarytenoid muscle . Ann Otol Rhinol Laryngol 1983;;92:424-429.
DeVito M, Malmgren LT, Gacek RR:  Three-dimensional computer reconstruction of the neuromuscular distribution in the human cricothyroid muscle . Arch Otolaryngol Head Neck Surg 1985;;111:110-113.
Gambino D, Malmgren LT, Gacek RR:  Three-dimensional computer reconstruction of the neuromuscular distribution in the human posterior cricoarytenoid muscle . Laryngoscope 1985;;95:556-560.
Freije J, Malmgren LT, Gacek RR:  Motor end-plate distribution in the human lateral cricoarytenoid muscle . Arch Otolaryngol Head Neck Surg 1986;;112:176-179.
McIsaac G, Kiernan JA:  Complete staining of neuromuscular innervation with bromindigo and silver . Stain Technol 1974;;49:211-214.
Silver A:  The Biology of the Cholinesterases , in Neuberger A, Tatum EL (eds): Frontiers of Biology . Amsterdam, North-Holland Publishing Co, 1974;, vol 36, pp 470-471.
Falen SW, Packard DS Jr:  Computer-assisted stereoscopic reconstruction of biological tissues . Proc Natl Comput Graph Assoc 1982;; 2:995-1003.
Warwick R, Williams P: Gray's Anatomy , ed 36. Philadelphia, WB Saunders Co, 1980;, pp 524, 1235-1236.
Vogel PH:  The innervation of the larynx of man and the dog . Am J Anat 1952;;90:427-440.
Christensen E:  Topography of terminal motor innervation in striated muscle from stillborn infants . Am J Phys Med 1959;;38:65-78.
Aquilonius SM, Askmark H, Gillberg PG, et al:  Topographical localization of motor endplates in cryosections of whole human muscles . Muscle Nerve 1984;;7:287-293.

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