Abstract
The ultrastructure of the trochanteral depressor muscle of the oriental rat flea is described. It is shown to be similar to that of the tubular leg muscles of other insects except in the volume and arrangement of the sarcoplasmic reticulum. The sarcoplasmic reticulum occupies approximately 18% of the volume of the muscle fibres. It is in three configurations: a regular array of parallel tubules opposite the A-band, a collar of sacculi involved in the formation of the dyads at the edge of the A-band and a loosely woven arrangement of tubules around the I-band. This tripartite arrangement of the sarcoplasmic reticulum and its large surface area is discussed in relation to the action of the muscle as the main propulsive muscle in the jump of the flea.
Subject
Industrial and Manufacturing Engineering,General Agricultural and Biological Sciences,General Business, Management and Accounting,Materials Science (miscellaneous),Business and International Management
Reference29 articles.
1. Distribution of the Two Kinds of Myofilaments in Insect Muscles
2. Chapman R. F. 1969 The insects: structure andfunction. English Universities Press.
3. Electrical, mechanical and ultrastructural properties of tonic and phasic muscle fibres in the locust (Schistocerca gregaria). J. Physiol;Cochrane D. G.;Lond.,1969
4. The fine structure and mechanism of breakdown of larval intersegmental muscles in the blowfly Calliphora erythrocephala
5. Cullen M. J. 1971 A comparative study of the anatomical basis of flight in Hemiptera. D.Phil. thesis. Oxford University.
Cited by
14 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献