Epimysium

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Epimysium

Epimysium (pronounced: eh-pi-my-see-um) is a layer of dense irregular connective tissue which ensheathes the entire muscle. It is a component of the muscular system and plays a crucial role in the function and structure of muscles.

Etymology

The term "Epimysium" is derived from the Greek words "epi", meaning "over" or "upon", and "mys", meaning "muscle". Thus, "Epimysium" essentially translates to "upon the muscle".

Function

The primary function of the Epimysium is to protect muscles from friction against other muscles and bones. It also provides a passive force transmission, which means that the force generated by the muscle fibers is transmitted to the tendon through the Epimysium.

Structure

The Epimysium is composed of dense irregular connective tissue. It surrounds the entire muscle and is located outside the perimysium, which divides the muscle into fascicles, and the endomysium, which surrounds individual muscle fibers.

Related Terms

  • Muscular system: The organ system that allows for movement of the body, maintains posture, and circulates blood throughout the body.
  • Tendon: A flexible but inelastic cord of strong fibrous collagen tissue attaching a muscle to a bone.
  • Perimysium: The connective tissue that surrounds fascicles.
  • Endomysium: The thin connective tissue layer that ensheathes each individual muscle fiber.

External links

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