spacer gif spacer gif spacer gif spacer gif spacer gif
QUICK SEARCH:   [advanced]


spacer gif
     Home     Help     Feedback     Subscriptions     Archive     Search     Table of Contents    

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Field, L. H.
Right arrow Articles by Larimer, J. L.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Field, L. H.
Right arrow Articles by Larimer, J. L.

Journal of Experimental Biology, Vol 62, Issue 3 519-530, Copyright © 1975 by Company of Biologists

JOURNAL ARTICLES

The cardioregulatory system of crayfish: neuroanatomy and physiology

LH Field and JL Larimer

1. The anatomical arrangement of the cardioregulatory nerves and their physiological activity during cardiac modulation were analysed in Procambarus clarkii. 2. The bilaterally arranged pairs of cardioinhibitors and cardioaccelerator axons, in nerves SN II and SN III respectively, were physiologically identified by correlating spikes in SN II and SN III with the same spikes in the dorsal nerve, which innervates the heart. 3. The cardioinhibitor neurone fired tonically in varied sporadic bursts. During periods of cardiac inhibition, however, this neurone discharged in a long chain of spikes at a characteristic frequency of 40-50Hz. 4. The cardioaccelerator neurone fired tonically at 2-3 Hz but on occasion its activity reached 12 Hz. 5. Three inhibitory cardiac reflexes were analysed. The sensory modalities for the reflexes included (a) stretch of the dorsal pericardial wall, (b) chemical stimulation of coxal hair sensilla with glucose and (c) tactile stimulation of hair sensilla in and below the gill chamber, on the antennae, the antennules and on the anterior cephalothorax. 6. The discharge of both cardioinhibitor neurones showed a weak temporal correlation suggesting a common presynaptic drive, while the pair of cardioaccelerators appeared to have a reciprocal relationship with the cardioinhibitors.


This article has been cited by other articles:


Home page
 J. Neurophysiol.Home page
T. J. Fort, V. Brezina, and M. W. Miller
Modulation of an Integrated Central Pattern Generator-Effector System: Dopaminergic Regulation of Cardiac Activity in the Blue Crab Callinectes sapidus
J Neurophysiol, December 1, 2004; 92(6): 3455 - 3470.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurosci.Home page
A. Mahadevan, J. Lappe, R. T. Rhyne, N. D. Cruz-Bermudez, E. Marder, and M. F. Goy
Nitric Oxide Inhibits the Rate and Strength of Cardiac Contractions in the Lobster Homarus americanus by Acting on the Cardiac Ganglion
J. Neurosci., March 17, 2004; 24(11): 2813 - 2824.
[Abstract] [Full Text] [PDF]


© The Company of Biologists Ltd 1975