Perimysium

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Perimysium

Perimysium (pronunciation: /ˌpɛrɪˈmaɪsiəm/) is a term used in anatomy to describe a sheath of connective tissue that groups muscle fibers into bundles (anywhere between 10 to 100 or more) or fascicles. The term is derived from the Greek words 'peri', meaning 'around' or 'surrounding', and 'mys', meaning 'muscle'.

Structure

The perimysium is a layer of dense, irregular connective tissue which surrounds each fascicle, allowing the muscle to resist friction against other muscles and bones. It also provides a pathway for the passage of nerves and blood vessels to the muscle fibers.

Function

The primary function of the perimysium is to bind together muscle fibers into fascicles, providing an organized structure to the muscle tissue. This allows the muscle to generate force in a specific direction. It also helps to prevent muscle damage by distributing the force generated by muscle contraction.

Related Terms

  • Endomysium: A layer of connective tissue that ensheathes each individual muscle fiber within a fascicle.
  • Epimysium: The outermost layer of connective tissue surrounding a muscle.
  • Fascicle: A bundle of skeletal muscle fibers surrounded by perimysium.
  • Connective tissue: Tissue that connects, supports, binds, or separates other tissues or organs.

See Also

External links

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