fasciculus

/fæsˈɪ.kjə.ləs/ (bre, ipa) · /fæsˈɪ.kjə.ləs/ (ame, ipa) · /fə-ˈsi-kyə-ləs fa-/ (ame, mw)

fasciculus — noun

  • fasciculussingular
  • fasciculiplural

1. a narrow group of muscle or nerve fibers tied together inside the body — for exa

1.名詞C2
釋義

a narrow group of muscle or nerve fibers tied together inside the body — for example, the small bundles you can see when a piece of meat is sliced lengthwise.

例句

The medical student traced one fasciculus along the patient's forearm during dissection class.

typical singular usage in anatomy class

Each fasciculus in the spinal cord carries signals between the brain and a specific body region.

collocation: fasciculus in the spinal cord

同義詞
  • fascicle

    everyday medical synonym; identical meaning, shorter form preferred in clinical writing

  • fiber bundle

    plain-English description; used when explaining the term to non-specialists

  • tract

    used specifically for long fasciculi of nerve fibers inside the central nervous system

文法句型

a fasciculus of [nerve/muscle] fibers

用法筆記

Almost exclusively medical or anatomical writing; the plural is 'fasciculi' (Latin plural), rarely 'fasciculuses'. In everyday English, 'bundle' or 'fascicle' is used instead.

常見錯誤

❌My arm has a lot of fasciculus.
✅My arm has many muscle fibers grouped into fasciculi.
💡'fasciculus' is countable; use the plural 'fasciculi' for more than one.
❌The book has three fasciculus.
✅The book has three fascicles.
💡'fasciculus' in modern English means a fiber bundle in the body, not a part of a published book.