Factbites
 Where results make sense
About us   |   Why use us?   |   Reviews   |   PR   |   Contact us  

Topic: Electrocyte


  
  Chondrichthyes, Electric Ray, Torpedo, EOD, Electric Organ discharge
The ingrowing neurites preferentially orient towards the ventral electrocyte surface and course along the basal lamina (the basal lamina of the ventral surface develops prior to the basal lamina of the dorsal surface).
Each electrocyte is ultimately innervated by a number of axons, that continue to grow in size with the overall growth of the animal indicate that synaptogenesis is an ongoing process.
Electrocytes are flattened cells with a smooth, innervated surface on one side and a highly infolded surface on the other side (surface increase).
www.sbg.ac.at /ipk/avstudio/pierofun/ray/eod.htm   (4646 words)

  
 Palaeos Vertebrates: 80.700  Neoselachii: Hypnosqualea
The electrocytes establish a charge difference across the cell membranes, presumably by active transport of ions.
The discharge is controlled by signals sent through massively hypertrophied motor neurons coordinated by a medullary pacemaker, which cause the gradient to collapse coordinately across the posterior face of each electrocyte, resulting in a net surge of current through the cell column.
It appears to be important that all of the electrocytes fire as simultaneously as possible.
www.palaeos.com /Vertebrates/Units/080Neoselachii/080.700.html   (2711 words)

  
 Electrochemistry Encyclopedia --- Electric fish
Nerve endings by one of several arrangements first discharge one face of the electrocytes and then the other, while the faces are anatomically patterned to add their pulses either in series (electric eel) or in parallel (Torpedo).
Each discharge is commanded by a special brain nucleus that receives and integrates multiple inputs and is usually relayed through one or more synapses in the brain stem and again in the spinal cord, besides the last junction between efferent axon and electrocyte.
Diversity on the motor side includes a variety of forms of innervation of the electrocytes in mormyrids, where these cells have stalks that in some species penetrate the flat disk-like electrocyte and receive motor nerve endings at a circumscribed part of the stalk.
yces.case.edu /ed/encycl/art-f01-fish.htm   (3496 words)

Try your search on: Qwika (all wikis)

Factbites
  About us   |   Why use us?   |   Reviews   |   Press   |   Contact us  
Copyright © 2005-2007 www.factbites.com Usage implies agreement with terms.