Home | My Profile | Contact Us
Research Trends Products  |   order gateway  |   author gateway  |   editor gateway  
Register | Forgot Password

Author Resources
 Author Gateway
 Article submission guidelines

Editor Resources
 Editor/Referee Gateway

 Regional Subscription Agents/Distributors
Trends in Comparative Biochemistry & Physiology   Volumes    Volume 1  Issue 1
Self-control of heart rhythm in some invertebrates
Arinobu Ebara, Hisashi Ohshima
Pages: 1 - 9
Number of pages: 9
Trends in Comparative Biochemistry & Physiology
Volume 1  Issue 1

Copyright © 1993 Research Trends. All rights reserved

The present study employing myogenic hearts of invertebrates (oyster and beetle) was performed to elucidate the mechanism of rhythm formation as an intrinsic control. The two connected half-ventricles in oyster and the two connected fragments of the heart in beetle show characteristics represented by the phase response graphs (Figs. 3, 4) in which the beat interval becomes elongated (inhibited) or shortened (accelerated) due to the application of impulses given by the other segment (neighbouring fibers). Cardic rhythm develops spontaneously from myocardia and is concentrated in a single series of regular beats through self-contrl. The existence of gap junction (cell coupling) assists in the simultaneous excitation of the whole heart in oyster. The beetle heart, however, has scarcely cell coupling to take peristaltic propagation of impulse.
Buy this Article


Buy this article
Buy this volume
Subscribe to this title
Shopping Cart

Quick Links
Search Products
Browse in Alphabetical Order : Journals
Browse by Subject Classification : Journals

Ordering Information Ordering Information
Downloadable forms Downloadable Forms