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词汇 ganglion
释义

Definition of ganglion in English:

ganglion

nounPlural ganglia, Plural ganglions ˈɡaŋɡlɪənˈɡæŋɡliən
  • 1Anatomy
    A structure containing a number of nerve cell bodies, typically linked by synapses, and often forming a swelling on a nerve fibre.

    〔剖〕神经中枢

    Example sentencesExamples
    • Herpes zoster is caused by reactivation of varicella-zoster virus from a dorsal root ganglion to a cutaneous nerve and the adjacent skin.
    • In the first form (restlessness and dysphagia), the lesions tend to concentrate in the brain stem and the cranial nerve ganglia.
    • This nerve carries the otic ganglion, which is derived from glossopharyngeal neurons.
    • The new regulation expands that prohibition to include dorsal root ganglia, clusters of nerve cells connected to the spinal cord along the vertebrae column.
    • The two major plexuses consist of ganglia, clusters of nerve cell bodies disposed at more or less regular intervals over the surface of the cylinder.
    1. 1.1 A network of cells forming a nerve centre in the nervous system of an invertebrate.
      (无脊椎动物神经系统中心的)神经细胞群
      Example sentencesExamples
      • For some experiments, samples of gill, claw muscle, hepatopancreas, gonad, and thoracic ganglion were also removed to serve as controls.
      • It appears as if all of the staining in the cerebral ganglia is due to processes emanating from cells in the ganglia at the base of the tentacles.
      • If this experiment were possible I would predict that removing the rhopalial ganglion cells would eliminate a behavioral response to light even if the eyes and the swim system remained unharmed.
      • Swim interneuron isolation was done according to methods previously described by them, by pulling the cell out of the ganglia using the recording microelectrode.
      • The MIH transcript is detectable in eyestalk neural ganglia throughout the molt cycle of the blue crab, Callinectes sapidus.
    2. 1.2 A well-defined mass of grey matter within the central nervous system.
      神经节。参见BASAL GANGLIA
      See also basal ganglia
      Example sentencesExamples
      • In normal circumstances, nerve cells in the part of the brain called the basal ganglia produce the chemical dopamine.
      • Inflammation is commonly present in the basal ganglia, brainstem, spinal cord, and dorsal root ganglia and is composed of a perivascular lymphocytic infiltrate with accompanying glial reaction.
      • Occurrence of neurodegeneration was indicated by the vacuolar appearance of neural tissues of the brain or ganglia.
      • Parkinson's disease affects a part of the brain's motor system called the basal ganglia.
      • It is deposited in those brain ganglia that normally house iron.
  • 2Medicine
    An abnormal benign swelling on a tendon sheath.

    〔医〕腱鞘囊肿

    Example sentencesExamples
    • Flexor tendon sheath ganglia make up the remaining 10 to 15 percent.
    • It is the breakdown of the synovial tissue of tendon sheaths that gives rise to most ganglia.
    • The most commonly considered diagnoses are ganglion, implantation dermoid, cyst, abscess, lipoma, subcutaneous foreign body granuloma, and tendon sheath xanthoma.
    • The differential diagnosis of a suture granuloma includes abscess, surgical wound inflammation, lipoma, neoplasm, or ganglion cyst.
    • Metastatic lesions may be confused with a ganglion, epidermoid inclusion cyst, acute gout, and even rheumatoid arthritis.

Derivatives

  • gangliform

  • adjective
  • ganglionated

  • adjective
  • ganglionic

  • adjective ɡaŋɡlɪˈɒnɪkˌɡæŋɡliˈɑnɪk
    • Robo2, which we identified in the screen as a weak suppressor, has previously been shown to be required to prevent the ganglionic branches of the embryonic tracheal system from crossing the ventral midline.
      Example sentencesExamples
      • The lesion was composed of ganglionic and astrocytic components.
      • The two main ganglionic trunks of the sympathetic nervous system are the cervical and lumbar trunks.
      • Mature neuronal or ganglionic cells were not seen.
      • Preganglionic fibres act on adrenal cells (through the production of acetylcholine) just as if those cells were ganglionic nerve cells.

Origin

Late 17th century: from Greek ganglion 'tumour on or near sinews or tendons', used by Galen to denote the complex nerve centres.

Rhymes

Anglian

Definition of ganglion in US English:

ganglion

nounˈɡaNGɡlēənˈɡæŋɡliən
  • 1Anatomy
    A structure containing a number of nerve cell bodies, typically linked by synapses, and often forming a swelling on a nerve fiber.

    〔剖〕神经中枢

    Example sentencesExamples
    • This nerve carries the otic ganglion, which is derived from glossopharyngeal neurons.
    • Herpes zoster is caused by reactivation of varicella-zoster virus from a dorsal root ganglion to a cutaneous nerve and the adjacent skin.
    • In the first form (restlessness and dysphagia), the lesions tend to concentrate in the brain stem and the cranial nerve ganglia.
    • The two major plexuses consist of ganglia, clusters of nerve cell bodies disposed at more or less regular intervals over the surface of the cylinder.
    • The new regulation expands that prohibition to include dorsal root ganglia, clusters of nerve cells connected to the spinal cord along the vertebrae column.
    1. 1.1 A network of cells forming a nerve center in the nervous system of an invertebrate.
      (无脊椎动物神经系统中心的)神经细胞群
      Example sentencesExamples
      • If this experiment were possible I would predict that removing the rhopalial ganglion cells would eliminate a behavioral response to light even if the eyes and the swim system remained unharmed.
      • It appears as if all of the staining in the cerebral ganglia is due to processes emanating from cells in the ganglia at the base of the tentacles.
      • The MIH transcript is detectable in eyestalk neural ganglia throughout the molt cycle of the blue crab, Callinectes sapidus.
      • For some experiments, samples of gill, claw muscle, hepatopancreas, gonad, and thoracic ganglion were also removed to serve as controls.
      • Swim interneuron isolation was done according to methods previously described by them, by pulling the cell out of the ganglia using the recording microelectrode.
    2. 1.2 A well-defined mass of gray matter within the central nervous system.
      神经节。参见BASAL GANGLIA
      See also basal ganglia
      Example sentencesExamples
      • It is deposited in those brain ganglia that normally house iron.
      • Parkinson's disease affects a part of the brain's motor system called the basal ganglia.
      • Occurrence of neurodegeneration was indicated by the vacuolar appearance of neural tissues of the brain or ganglia.
      • In normal circumstances, nerve cells in the part of the brain called the basal ganglia produce the chemical dopamine.
      • Inflammation is commonly present in the basal ganglia, brainstem, spinal cord, and dorsal root ganglia and is composed of a perivascular lymphocytic infiltrate with accompanying glial reaction.
  • 2Medicine
    An abnormal benign swelling on a tendon sheath.

    〔医〕腱鞘囊肿

    Example sentencesExamples
    • Flexor tendon sheath ganglia make up the remaining 10 to 15 percent.
    • The most commonly considered diagnoses are ganglion, implantation dermoid, cyst, abscess, lipoma, subcutaneous foreign body granuloma, and tendon sheath xanthoma.
    • The differential diagnosis of a suture granuloma includes abscess, surgical wound inflammation, lipoma, neoplasm, or ganglion cyst.
    • It is the breakdown of the synovial tissue of tendon sheaths that gives rise to most ganglia.
    • Metastatic lesions may be confused with a ganglion, epidermoid inclusion cyst, acute gout, and even rheumatoid arthritis.

Origin

Late 17th century: from Greek ganglion ‘tumor on or near sinews or tendons’, used by Galen to denote the complex nerve centers.

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