Dictionary » G » Ganglion

Ganglion

Definition

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.


Supplement

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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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: 16
Views: 39281

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: 708

Can you fill in the blanks

Parasympathtic innervation of the heart involves a preganglionic Neuron that arises from ___________ levels of the CNS and synapses with a postganglionic neuron in a ____________ ganglion that is located in the heart wall. Conversely sympathetic innervation ...

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by Bioslave
Wed Oct 22, 2008 2:03 am
 
Forum: Human Biology
Topic: Can you fill in the blanks
Replies: 1
Views: 633

Reflexes - general question

... monosynaptic reflexes - there is only one synapse(hence, two neurons) in the path. The common example is the rotulian reflex: one neuron in the ganglion near the spine, one motor neuron in the spine. A more complicated reflex is the nociceptive reflex - pulling your hand away when you hold it ...

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by MrMistery
Fri Apr 11, 2008 3:15 pm
 
Forum: Physiology
Topic: Reflexes - general question
Replies: 3
Views: 1745

Re: Human ganglion

http://en.wikipedia.org/wiki/Gray_matter

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by mith
Tue Jan 01, 2008 11:02 pm
 
Forum: Human Biology
Topic: Human ganglion
Replies: 1
Views: 510
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