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Article: A study of the fine structure of the accessory muscle of the horseshoe crab, Tachypleus gigas

TitleA study of the fine structure of the accessory muscle of the horseshoe crab, Tachypleus gigas
Authors
Issue Date1975
PublisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/35280
Citation
Journal Of Morphology, 1975, v. 147 n. 4, p. 439-457 How to Cite?
AbstractThe accessory muscle of the walking leg of the horseshoe crab, Tachypleus gigas, was examined electron microscopically. The muscle fibers vary in size but are small in diameter, when compared with other arthropod skeletal muscles. They are striated with A, I, Z and poorly defined H bands. The sarcomere length ranges from 3-10 μm with most sarcomeres in the range of about 6 μm. The myofilaments are arranged in lamellae in larger fibers and less well organized in the smaller ones. Each thick filament is surrounded by 9-12 thin filaments which overlap. The SR is sparse but well organized to form a fenestrated collar around the fibrils. Individual SR tubules are also seen among the myofibrils. Long transverse tubules extend inward from the sarcolemma to form dyads or triads with the SR at the A-I junction. Both dyads and triads coexist in a single muscle fiber, a feature believed to have evolutionary significance. The neuromuscular relationship is unique. In the region of synaptic contact, the sarcolemma is usually elevated to form a large club shaped structure containing no myofilaments and few other organelles. The axons or axon terminals and glial elements penetrate deep into the club shaped sarcoplasm and form synapses with the fiber. As many as 13 terminals have been observed within a single section. Synaptic vesicles of two types are found in the axon terminals.
Persistent Identifierhttp://hdl.handle.net/10722/149400
ISSN
2015 Impact Factor: 1.521
2015 SCImago Journal Rankings: 0.961
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWong, YCen_US
dc.contributor.authorHwang, JCen_US
dc.date.accessioned2012-06-26T05:53:15Z-
dc.date.available2012-06-26T05:53:15Z-
dc.date.issued1975en_US
dc.identifier.citationJournal Of Morphology, 1975, v. 147 n. 4, p. 439-457en_US
dc.identifier.issn0362-2525en_US
dc.identifier.urihttp://hdl.handle.net/10722/149400-
dc.description.abstractThe accessory muscle of the walking leg of the horseshoe crab, Tachypleus gigas, was examined electron microscopically. The muscle fibers vary in size but are small in diameter, when compared with other arthropod skeletal muscles. They are striated with A, I, Z and poorly defined H bands. The sarcomere length ranges from 3-10 μm with most sarcomeres in the range of about 6 μm. The myofilaments are arranged in lamellae in larger fibers and less well organized in the smaller ones. Each thick filament is surrounded by 9-12 thin filaments which overlap. The SR is sparse but well organized to form a fenestrated collar around the fibrils. Individual SR tubules are also seen among the myofibrils. Long transverse tubules extend inward from the sarcolemma to form dyads or triads with the SR at the A-I junction. Both dyads and triads coexist in a single muscle fiber, a feature believed to have evolutionary significance. The neuromuscular relationship is unique. In the region of synaptic contact, the sarcolemma is usually elevated to form a large club shaped structure containing no myofilaments and few other organelles. The axons or axon terminals and glial elements penetrate deep into the club shaped sarcoplasm and form synapses with the fiber. As many as 13 terminals have been observed within a single section. Synaptic vesicles of two types are found in the axon terminals.en_US
dc.languageengen_US
dc.publisherJohn Wiley & Sons, Inc. The Journal's web site is located at http://www3.interscience.wiley.com/cgi-bin/jhome/35280en_US
dc.relation.ispartofJournal of Morphologyen_US
dc.titleA study of the fine structure of the accessory muscle of the horseshoe crab, Tachypleus gigasen_US
dc.typeArticleen_US
dc.identifier.emailWong, YC:ycwong@hkucc.hku.hken_US
dc.identifier.authorityWong, YC=rp00316en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1002/jmor.1051470405-
dc.identifier.scopuseid_2-s2.0-0016747755en_US
dc.identifier.volume147en_US
dc.identifier.issue4en_US
dc.identifier.spage439en_US
dc.identifier.epage457en_US
dc.identifier.isiWOS:A1975AZ10400004-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridWong, YC=7403041798en_US
dc.identifier.scopusauthoridHwang, JC=7403897481en_US

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