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Published on: February 5, 2020
Propulsive action of a snake pushing against a single site: Its combined analysis
J P Gasc1, D Cattaert2, C Chasserat2
1UA CNRS 1137 Laboratoire d'Anatomie Comparée, Muséum National d'Histoire Naturelle, 55 rue Buffon 75005, Paris.
Abstract:
The simultaneous use of electromyography (EMG), strain gauges, and cinematography show that the capacity of continuous displacement from a single peg is based on the following: sequential activity of the tested muscles from front to rear; activity restricted to the short portion of the body in contact with the peg; alternate action of the muscle longissimus dorsi on the two sides, the transition between one side to the other occurring at the site of contact with the peg; unilateral activity of the muscle supracostalis ventralis responsible for a bulging against the peg; a great stability in the direction of the resultant force, which makes only a small angle with the directio of the motion.
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