Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/31062
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Type: Book chapter
Title: Fatigue of jaw muscles and speech mechanisms
Author: Miles, T.
Nordstrom, M.
Citation: Fatigue: Neural and Muscular Mechanisms, 1995 / pp.415-426
Publisher: Plenum Press
Issue Date: 1995
Series/Report no.: ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY
ISBN: 0-306-45139-5
9781489910189
Abstract: Histochemical studies show that the distribution of fiber types in human jaw muscles is different from that in various limb muscles, no doubt representing different functional demands as well as a different embryological derivation. Jaw-closing muscles appear more resistant to fatigue than limb muscles with intermittent maximal contractions. Endurance of continuous isometric biting is limited by pain. Masseter motor unit fatigability in sub-maximal contractions is similar to the limb muscles. There are few physiological data for the jaw-opening muscles. The distribution of fiber types in human speech muscles is consistent with the high speeds of contraction that must be used in phonation. Although clinical syndromes of fatigue of speech muscles are recognized, there is little direct information on the fatigability of the muscle fibers themselves.
Keywords: Masticatory Muscles; Jaw; Motor Neurons; Animals; Humans; Speech; Muscle Fatigue; Muscle Contraction
RMID: 0030002091
DOI: 10.1007/978-1-4899-1016-5_33
Appears in Collections:Physiology publications

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