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Nerves and muscles of the pregenital abdominal segments of the American cockroach, Periplaneta americana (L.)
Author(s) -
Shankland D. L.
Publication year - 1965
Publication title -
journal of morphology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 74
eISSN - 1097-4687
pISSN - 0362-2525
DOI - 10.1002/jmor.1051170304
Subject(s) - periplaneta , anatomy , biology , ventral nerve cord , thorax (insect anatomy) , spinal cord , cockroach , diaphragm (acoustics) , abdominal muscles , nervous system , neuroscience , ecology , physics , acoustics , loudspeaker
Abstract The muscles and motor and sensory nerves of the pregenital abdominal segments were described and discussed in relation to the nerves and muscles of the thorax, as described by other workers. Each of the integumental muscles was named and described with regard to its location, function and innervation. Differences among segments of the same sex and between sexes were noted. A description of a longitudinal muscle, named here the hyperneural muscle , was included. The muscle overlies the abdominal portion of the nerve cord and may be derived from the ventral diaphragm. The most notable features of its structure are chiasmata of fibers which occur at points along its length and which show consistent relationships to the nerve cord and median nerve. A previously undescribed organ, located ventrally at the intersegmental fold, having dual innervation and showing stretch receptor function was described.