fasciculus

/'fæsikl/ Cách viết khác : (fascicule) /'fæsikju:l/ (fasciculus) /fə'sikjuləs/
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Thân thiện
fasciculus

A scientist examines a fasciculus under a microscope.

Definition
  1. Noun:
    • A small bundle or cluster of anatomical fibers, especially nerve or muscle fibers: In anatomy and neurology, a fasciculus is a discrete, organized collection of fibers (axons in nerves or myofibrils in muscles) bound together by connective tissue.
Examples of Usage
  • Noun:
    • The corticospinal tract is a major fasciculus that transmits motor signals from the brain to the spinal cord.
    • Under the microscope, you can observe each muscle fasciculus surrounded by perimysium.
Advanced Usage
  • Specific Anatomical Names: The term is often part of the proper names for specific nerve tracts in the central nervous system.
    • The arcuate fasciculus is a bundle of axons that connects Broca's area and Wernicke's area in the brain.
  • In Pathology: Used to describe the condition or appearance of fiber bundles.
    • The biopsy showed degeneration of the muscle fasciculi.
Variants and Related Words
  • Fascicle (noun): A more general term for a small bundle or cluster, often used interchangeably with "fasciculus" in anatomy and botany (e.g., a fascicle of leaves or nerve fibers).
  • Fasciculation (noun): An involuntary twitching or contraction of muscle fasciculi, often visible under the skin.
  • Fascicular (adjective): Pertaining to or arranged in a fasciculus or fascicles (e.g., fascicular cambium in plants).
Synonyms
  • Bundle: A collection of things, such as fibers, bound together.
  • Tract: A major pathway or bundle of nerve fibers in the central nervous system (a specific type of fasciculus).
  • Band: A strip or bundle of tissue.
Notes on Meaning
  • The term is highly specialized and primarily used in scientific contexts, particularly neuroanatomy, muscle anatomy, and histology. It is not used in everyday conversation.
  • While "fasciculus" and "fascicle" are often synonymous in anatomy, "fascicle" has broader applications, including in botany and publishing (a section or installment of a book).
fasciculus

A scientist examines a fasciculus under a microscope.

Noun
  1. a bundle of fibers (especially nerve fibers)

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