ganglion

ganglia

A biological tissue mass, most commonly a mass of nerve cell bodies.

Type Nerve
Système corporel Nervous
Nom latin ganglia
FMA ID 5884

Sous-structures

sensory ganglion Nerve trunk ganglion Nerve cranial ganglion Nerve ganglion of peripheral nervous system Nerve ganglion of central nervous system Nerve Grueneberg ganglion Nerve

Questions fréquentes

What is a ganglion in the nervous system?
A ganglion is a cluster of nerve cell bodies located outside the central nervous system (brain and spinal cord), forming part of the peripheral nervous system. Ganglia serve as relay or processing stations where signals are modified or redistributed. The two major categories are sensory ganglia (such as the dorsal root ganglia), which contain afferent neuron cell bodies, and autonomic ganglia (sympathetic and parasympathetic), which contain efferent neurons controlling involuntary functions.
How do ganglia differ from nuclei in the brain?
Both ganglia and nuclei are clusters of neuronal cell bodies, but the distinction is anatomical location: ganglia are in the peripheral nervous system, while nuclei are in the central nervous system (brain and spinal cord). Functionally, both can serve as relay centers, but ganglia are typically simpler processing nodes compared to the complex integrative nuclei of the brain.
What is a ganglion cyst and is it related to nerve ganglia?
A ganglion cyst is a benign fluid-filled lump commonly found near joints and tendons (most often the wrist), but despite sharing the name, it has no direct relationship to neural ganglia. The term 'ganglion' in this context is a historical misnomer. Ganglion cysts arise from joint capsule or tendon sheath tissue and contain synovial-like fluid, not neural tissue.

Structures associées

accessory nucleus of optic tract nuclei accessorii tractus optici muscle spindle muscle stretch receptor mushroom body corpora pedunculata myelencephalon sulcus limitans cavum septum pellucidum cave of septum pellucidum spinal cord commissure neodentate part of dentate nucleus neodentate portion of dentate nucleus nerve nerves

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Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.