Bipolar cell
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| Bipolar cell | |
|---|---|
 | |
| Bipolar nerve cell from the spinal ganglion of the pike. | |
| Gray's | subject #183 722 |
| Dorlands/Elsevier | c_18/12222719 |
A bipolar cell is a type of neuron which has two extensions. Bipolar cells are specialized sensory neurons for the transmission of special senses. As such, they are part of the sensory pathways for smell, sight, taste, hearing and vestibular functions.
The most common examples are the bipolar cell of the retina, and the ganglia of the vestibulocochlear nerve.[1] When used without further detail, the term usually refers to the retinal cells.
Bipolar cells are also found in the spinal ganglia, when the cells are in an embryonic condition.
They are best demonstrated in the spinal ganglia of fish.
Sometimes the extensions, also called "processes", come off from opposite poles of the cell, and the cell then assumes a spindle shape; in other cells both processes emerge at the same point.
In some cases where two fibers are apparently connected with a cell, one of the fibers is really derived from an adjoining nerve cell and is passing to end in a ramification around the ganglion cell, or, again, it may be coiled spirally around the nerve process which is issuing from the cell.
See also
References
- ↑ Bipolar+cell at eMedicine Dictionary
External links
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
de:Bipolare ZellenAcknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
