PMID: 13549495May 25, 1958Paper

Neuromuscular junctions in flight and tymbal muscles of the cicada

The Journal of Biophysical and Biochemical Cytology
G A EDWARDSE DE HARVEN

Abstract

The tymbal muscle fiber in the cicada closely resembles the indirect flight muscle fiber in its structural detail. We agree with other authors that the tymbal muscle is a modified indirect flight muscle. The peripheral nerve branches to the tymbal and flight muscle fibers are similar to those in the wasp leg. The axon is loosely mantled by irregular turns of the mesaxon, enclosing cytoplasm. The nerve is therefore a tunicated nerve. The neuromuscular junction in the high frequency muscle fibers shows direct apposition of plasma membranes of axon and muscle fiber, large numbers of mitochondria and synaptic vesicles in the axon, and concentrations of mitochondria, aposynaptic granules, and endoplasmic reticulum in the postsynaptic area of the muscle fiber. Of special interest is the multitude of intracellular, opposing membranes in the postsynaptic area. They form laminated stacks and whorls, vesicles, cysternae, and tubules. They occasionally show continuity with the plasma membrane, the outer nuclear envelope, and the circumfibrillar endoplasmic reticulum. The membrane system in this area is designated "rete synapticum." It is believed to add to the electrical capacity of the neuromuscular junction, to serve in transmission of ...Continue Reading

References

Feb 1, 1954·The Journal of Experimental Medicine·A J HODGED SPIRO
Jul 25, 1956·The Journal of Biophysical and Biochemical Cytology·J D ROBERTSON
Jul 25, 1956·The Journal of Biophysical and Biochemical Cytology·P DE SOUZA SANTOSA VALLEJO-FREIRE
Mar 25, 1957·The Journal of Biophysical and Biochemical Cytology·K R PORTER, G E PALADE
Jan 25, 1958·The Journal of Biophysical and Biochemical Cytology·G A EDWARDSE DE HARVEN
Jan 25, 1958·The Journal of Biophysical and Biochemical Cytology·E DE HARVEN

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Citations

Jan 1, 1968·Zeitschrift für Zellforschung und mikroskopische Anatomie·H Teräväinen
Jan 1, 1961·Zeitschrift für Zellforschung und mikroskopische Anatomie·Y NAKAJIMA
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Mar 25, 1959·The Journal of Biophysical and Biochemical Cytology·G A EDWARDS
Dec 1, 1959·The Journal of Biophysical and Biochemical Cytology·H E KARRER
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