| Title |
Structural correlates of function in the “opercularis” muscle of amphibians
|
|---|---|
| Published in |
Cell and Tissue Research, January 1977
|
| DOI | 10.1007/bf00222415 |
| Pubmed ID | |
| Authors |
Robert P. Becker, R. Eric Lombard |
| Abstract |
This study characterizes the fine structure of the "opercularis" muscles of selected frogs and salamanders (Genera: Hyla; Desmognathus; Ambystoma). The "opercularis" muscle originates on the shoulder girdle and inserts on the opercular plate in the fenestra ovalis of the otic capsule. Each of the three genera used exhibits one of the major gross dispositions of this muscle found in amphibians. In each case the "opercularis" muscle contains large numbers of tonic fibers: 80% in Hyla; 90% in Desmognathus; 45% in Ambystoma. These fibers correspond to the class-5 tonic fibers of Smith and Ovalle (1973). The remained of the fibers in the "opercularis" correspond to those in the class-3 "phasic" of Smith and Ovalle. The muscle from which the "opercularis" is derived (levator scapulae in Hyla, cucullaris in Desmognathus) is comprised of fibers which correspond to the class-2 phasic fibers of Smith and Ovalle. The fiber composition of the "opercularis" indicates that it is constructed to sustain contraction over long periods of time. This composition is supportive of the functional role in audition proposed for the muscle by Lombard and Straughan (1974). Evidence is presented that indicates that fiber size may be body size dependent and thus is an inappropriate criterion of fiber type identification. |
Mendeley readers
The data shown below were compiled from readership statistics for 17 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 17 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Professor | 4 | 24% |
| Student > Ph. D. Student | 3 | 18% |
| Other | 2 | 12% |
| Researcher | 2 | 12% |
| Student > Bachelor | 2 | 12% |
| Other | 3 | 18% |
| Unknown | 1 | 6% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 11 | 65% |
| Neuroscience | 2 | 12% |
| Biochemistry, Genetics and Molecular Biology | 1 | 6% |
| Social Sciences | 1 | 6% |
| Medicine and Dentistry | 1 | 6% |
| Other | 0 | 0% |
| Unknown | 1 | 6% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 16 December 2016.
All research outputs
#8,510,224
of 25,378,799 outputs
Outputs from Cell and Tissue Research
#543
of 2,233 outputs
Outputs of similar age
#3,713
of 24,108 outputs
Outputs of similar age from Cell and Tissue Research
#2
of 6 outputs
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