electric organ

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electric organ

an organ that is capable of giving an electric shock to any organism coming in contact with it, and occurring particularly in ELASMOBRANCH fish such as rays.
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Evolution has removed the ability of muscle cells to contract and changed the distribution of proteins in the cell membrane; now all electrocytes do is push ions across a membrane to create a massive flow of positive charge," said Lindsay Traeger, U-W graduate student and co-author of the study.
The "in-series alignment" of the electrocytes and unique polarity of each cell allows for the "summation of voltages, much like batteries stacked in series in a flashlight," said Michael Sussman, U-W biochemist.
Innervated electrocytes that retain electrical responsiveness to presynaptic stimulation can be isolated from skate electric organ following collagenase treatment at room temperature (Fox et al.
They found that the dimmer switch comes in the form of sodium channels the fish insert and remove from the membranes of special cells, called electrocytes, within their electric organs.
Electric fish generate energy and produce an electric current from electrocytes which are derived from muscle tissue.
The organ consists of approximately 8,000-10,000 cup- or disk-shaped electrocytes arranged anteroposteriorly in series (Ewart, 1892; Brock et aL, 1953; D.