Dictionary » G » Ganglion



noun, plural: ganglia

(1) (anatomy) A mass of nerve cell bodies outside the central nervous system.

(2) (neuroanatomy) A cluster of interconnecting nerve cells outside the brain.

(3) A benign cyst found on aponeurosis or tendon, usually at the wrist or dorsum of the foot.


In vertebrates the ganglia are located outside the brain or spinal cord.

There are two major groups of ganglia:

Word origin: From Greek, cystlike tumor, nerve bundle.
Related forms: ganglial (‘’adjective’’)

Related terms:

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Retina and fetus

... first is a scheme of a section of the retina of a human's eye. We're to name the elements of the retina marked as letters. That's what I have: a - ganglion cell b - bipolar cell c - cone cell d - rod cell But I don't have even a slightest guess with e and f.. could you help me? And regarding the ...

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by Juggler
Wed Oct 05, 2011 5:02 pm
Forum: General Discussion
Topic: Retina and fetus
Replies: 2
Views: 3404

Neuroscience question

... The skin is connected to the primary somatosensory cortex through afferent (receving information) neurons. As I understand it, there is only one ganglion connecting the central nervous system to the skin, unlike the ganglia of the autonomic nervous system where there is a separate preganglionic ...

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by Condraz23
Mon Feb 15, 2010 11:17 am
Forum: Human Biology
Topic: Neuroscience question
Replies: 0
Views: 2562

terminal ganglion parasympathetic

i know that the parasympathetic neurones: ones in teh occulomotor III, facial VII, glosopharyngeal XI synapse with ganglions known as terminal ganglions. but with the vagus and the sacral neurones, the ganglions which teh preganglionic and postganglionic synapse are they also known ...

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by sarah90222
Fri Nov 20, 2009 10:34 pm
Forum: Human Biology
Topic: terminal ganglion parasympathetic
Replies: 0
Views: 1404

Re: Vagus Nerve

... eardrum and internal abdominal organs. The root of the nerve exits the cranial cavity via the jugular foramen. Within the foramen is the superior ganglion, containing cell bodies of general somatic afferent fibres, and just external to the... * neurological examination ( in nervous system disease: ...

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by sanjidcapa
Tue May 05, 2009 9:15 am
Forum: Human Biology
Topic: Vagus Nerve
Replies: 19
Views: 175456

How did the brain form?

It probably formed from nerves; see worm's ganglia/ganglion.

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by mith
Wed Mar 11, 2009 5:09 pm
Forum: Evolution
Topic: How did the brain form?
Replies: 6
Views: 4474
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