The remotor muscle of the second antenna of the American lobster is functionally divided into two parts. One part produces slow, powerful contractions and is used for postural control. The other part produces very brief twitches, can follow frequencies over 100/sec without fusion and is probably used for sound production. This great speed is due, in part, to synchronous arrival of nerve impulses at multiple terminals, a very brief membrane electrical response and electrical continuity throughout large volumes of sarcoplasm. Calculations indicate that the very extensive sarcoplasmic reticulum is probably responsible for the rapid decline of tension in this muscle.
Article| August 01 1969
ELECTRICAL AND MECHANICAL CHARACTERISTICS OF A VERY FAST LOBSTER MUSCLE
From the Department of Physiology and Biophysics, New York University School of Medicine, New York 10016, and The Marine Biological Laboratory, Woods Hole, Massachusetts 02543
Received: October 22 1968
Revision Received: April 08 1969
Online Issn: 1540-8140
Print Issn: 0021-9525
Copyright © 1969 by The Rockefeller University Press.
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Martin Mendelson; ELECTRICAL AND MECHANICAL CHARACTERISTICS OF A VERY FAST LOBSTER MUSCLE . J Cell Biol 1 August 1969; 42 (2): 548–563. doi: https://doi.org/10.1083/jcb.42.2.548
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