PMID: 7993005Dec 1, 1994Paper

Dynamic properties of the posterior cricoarytenoid muscle

The Annals of Otology, Rhinology, and Laryngology
D S CooperD H Rice


The aim of this research was to investigate the contractile properties of the posterior cricoarytenoid (PCA) muscle. Simultaneous measurements were made of the isometric force, temperature, and electromyographic activity of the dorsal cricoarytenoid muscle of anesthetized dogs during supramaximal stimulation of the recurrent laryngeal nerve for twitch and tetanic contraction. The conduction delay between stimulation of the recurrent nerve at the level of the larynx and the onset of the muscle action potential averaged 2.0 +/- 0.2 milliseconds (ms), and the latent period between the onset of electrical activity of the muscle and the onset of contraction had a mean duration of 3.3 +/- 0.8 ms. The mean of isometric contraction times found was 33.3 +/- 2.0 ms, shorter than most previous studies of canine PCA muscle. Tetanic frequency defined as smooth contraction was higher than previous estimates. Considerations of scaling of physiological time based on animal mass were applied to analysis of the experimental findings to make possible systematic comparison of previous findings across species and animal size.


Feb 1, 1989·The Annals of Otology, Rhinology, and Laryngology·D H Rice, D S Cooper
Sep 1, 1987·Journal of Speech and Hearing Research·F Alipour-HaghighiP Durham
Dec 1, 1968·Journal of Applied Physiology·B SaltinJ A Stolwijk
Apr 1, 1969·The Annals of Otology, Rhinology, and Laryngology·H HiroseM Sawashima
Mar 1, 1967·Journal of Applied Physiology·W R Stahl
Jun 1, 1967·The Annals of Otology, Rhinology, and Laryngology·M H Hast
Mar 1, 1993·The Annals of Otology, Rhinology, and Laryngology·D S CooperD H Rice
Apr 1, 1964·Acta Physiologica Scandinavica·C R SKOGLUND

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