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Tytuł pozycji:

Anatomy and physiology of neurons composing the commissural ring nerve of the cricket, Acheta domesticus.

Tytuł :
Anatomy and physiology of neurons composing the commissural ring nerve of the cricket, Acheta domesticus.
Autorzy :
Killian KA; Department of Zoology, Miami University, Oxford, Ohio 45056, USA. />Bollins JP
Govind CK
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Źródło :
The Journal of experimental zoology [J Exp Zool] 2000 Mar 01; Vol. 286 (4), pp. 350-66.
Typ publikacji :
Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.
Język :
English
Imprint Name(s) :
Original Publication: [New York, etc.] Wiley-Liss [etc.]
MeSH Terms :
Gryllidae/*anatomy & histology
Motor Neurons/*ultrastructure
Animals ; Motor Neurons/physiology ; Peripheral Nervous System/anatomy & histology
Grant Information :
NS32857-01A1 United States NS NINDS NIH HHS
Entry Date(s) :
Date Created: 20000223 Date Completed: 20000329 Latest Revision: 20091216
Update Code :
20210210
PMID :
10684558
Czasopismo naukowe
The commissural ring nerve (RN) of the cricket Acheta domesticus links together the two cercal motor nerves of the terminal abdominal ganglion. It contains the axons of almost 100 neurons including two bilateral clusters of eight to 13 ventrolateral neurons and approximately 75 neurons with midline somata within the terminal abdominal ganglion. The ventrolateral neurons have an ipsilateral dendritic arborization within the dorsal neuropil of the ganglion and their axons use the RN as a commissure in order to enter the contralateral nerves of the tenth ganglionic neuromere. In contrast, most midline neurons have bifurcating axons projecting bilaterally into the neuropil of the ganglion as well as into the RN where they often branch extensively before entering the contralateral tenth nerves. Most RN neurons have small, non-spiking somata with spike initiation zones distant from the soma. Many midline neurons also produce double-peaked spikes in their somata, indicative of multiple spike initiation zones. Spontaneous neuronal activity recorded extracellularly from the RN reveals several units, some with variable firing patterns, but none responding to sensory stimuli. The RN is primarily composed of small (50 nm diameter) axon profiles with a few large (0.5-1 microm diameter) profiles. Occasionally, profiles of nerve terminals containing primarily small clear vesicles and a few large dense vesicles are observed. These vesicles can sometimes be clustered about an active zone. We conclude that the primary function of the RN is to serve as a peripheral nerve commissure and that its role as a neurohemal organ is negligible. J. Exp. Zool. 286:350-366, 2000.
(Copyright 2000 Wiley-Liss, Inc.)

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