Endomysium

Definition

Endomysium is a layer of connective tissue that surrounds individual muscle fibers. It provides structural support and facilitates nutrient exchange within muscles.

5 Must Know Facts For Your Next Test

1. Endomysium contains capillaries and nerves crucial for muscle function.
2. It plays a role in the transmission of force generated by muscle fibers during contraction.
3. Autoimmune disorders like polymyositis can target the endomysium, leading to muscle inflammation and weakness.
4. Endomysial antibodies are often used as a diagnostic marker for certain autoimmune diseases, such as celiac disease.
5. Damage to the endomysium can impair muscle regeneration and repair processes.

Review Questions

• What physiological role does the endomysium play in muscle tissue?
• How is the endomysium involved in autoimmune disorders like polymyositis?
• Why are endomysial antibodies significant in diagnosing autoimmune diseases?

Related terms

Perimysium: A connective tissue layer that surrounds bundles of muscle fibers called fascicles.

Epimysium: The outermost layer of connective tissue that encases the entire muscle.

Polymyositis: An autoimmune disorder characterized by inflammation and weakness of skeletal muscles.