ganglia

ganglia

A diagram shows the ganglia of the nervous system.

Definition
  1. Noun (plural of ):
    • Anatomical structure: "ganglia" are clusters of nerve cell bodies located outside the brain and spinal cord, forming part of the peripheral nervous system. They serve as relay points for nerve signals.
    • Figurative meaning: "ganglia" can also refer to any central point of activity or influence in a system, such as a hub for communication or control.
Usage Examples

  • Anatomical:

    • The dorsal root ganglia contain the cell bodies of sensory neurons. (These clusters are found along the spinal cord and transmit sensory information.)
    • Damage to the ganglia in the autonomic nervous system can affect involuntary functions like heart rate. (Injury to these nerve clusters disrupts automatic bodily processes.)

  • Figurative:

    • The city's financial districts act as the ganglia of the global economy. (These areas function as central hubs for economic activity.)
    • The internet has become the ganglia of modern communication. (The network serves as a central relay system for information.)
Advanced Usage

  • "basal ganglia": a group of subcortical nuclei in the brain involved in motor control, learning, and emotion.

    • Parkinson's disease is linked to dysfunction in the basal ganglia. (This area of the brain is critical for coordinating movement.)

  • "ganglion cyst": a noncancerous lump that forms near joints or tendons, often associated with ganglia.

    • The doctor drained the ganglion cyst on her wrist. (The fluid-filled sac was removed for relief.)
Variants and Related Words

  • Ganglion (n, singular): a single cluster of nerve cells.

    • Each ganglion in the chain processes signals from a specific body region. (A single nerve cluster handles localized information.)

  • Ganglionic (adj): relating to or resembling a ganglion.

    • The ganglionic block was used to interrupt nerve signals during surgery. (This medical intervention targets nerve clusters.)
Synonyms
  • Nerve cluster: a group of nerve cells.
  • Neural center: a central point for nerve activity.
  • Hub: a central point for communication or activity (figurative).
Related Idioms
  • "Ganglia of power": the central points where authority or influence is concentrated.
    • The boardroom is one of the ganglia of power in this corporation. (It is a key location for decision-making.)