An ultrastructural investigation of the striated subumbrellar musculature of the anthomedusan, Pennaria tiarella
- 1 August 1976
- journal article
- research article
- Published by Wiley in Journal of Morphology
- Vol. 149 (4) , 507-525
- https://doi.org/10.1002/jmor.1051490405
Abstract
The presence of striated subumbrellar musculature in hydromedusae can be related to the development in hydrozoans of a free-swimming life stage. The detailed ultrastructure of the striated subumbrellar musculature of the anthomedusan, Pennaria tiarella is presented. The striated musculature of Pennaria resembles vertebrate striated muscle in filament arrangement (L2 lattice pattern) and M line structure. The striation pattern, out-of-register myofilaments, filament structure as determined by rotational symmetry, Z line structure, types of intercellular junctions, and sarcoplasmic reticulum are more similar to structures found in other invertebrate striated muscle.This publication has 44 references indexed in Scilit:
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