Endomysium

(histology) The connective tissue layer surrounding an individual skeletal muscle fiber.

The connective tissue surrounding each individual muscle fibre.

The fine connective tissue sheath surrounding a muscle fiber.

The sheath of delicate reticular fibrils that surrounds each muscle fiber.

Endomysium
Structure of a skeletal muscle. (Endomysium labeled at bottom center.)
Gray's	subject #103 373

The endomysium, literally meaning within the muscle, is a layer of connective tissue that ensheaths a muscle fiber and is composed mostly from reticular fibers. It also contains capillaries, nerves and lymphatics.

The term cardiac skeleton is sometimes considered synonymous with endomysium, but sometimes it refers to the combination of the endomysium and perimysium.

External links

• UIUC Histology Subject 777
• Endomysium at eMedicine Dictionary
• Illustration at wku.edu
• Organology at UC Davis Musculoskeletal/muscle/skeletal1/skeletal3
• MedEd at Loyola histo/practical/muscle/hp7-42.html

v • d • e Histology: muscle tissue Striated muscle Skeletal muscle Costamere/ DAPC Membrane/ extracellular DAP: Sarcoglycan (SGCA, SGCB, SGCD, SGCE, SGCG, SGCZ) · Dystroglycan Sarcospan · Laminin, alpha 2 Intracellular Dystrophin · Dystrobrevin (A, B) · Syntrophin (A, B1, B2, G1, G2) · Syncoilin · Dysbindin · Synemin/desmuslin related: NOS1 · Caveolin 3 General Neuromuscular junction · Motor unit · Muscle spindle · Excitation-contraction coupling · Sliding filament mechanism Cardiac muscle Myocardium · Intercalated disc · Nebulette General Connective tissue Epimysium · Fascicle · Perimysium · Endomysium Fiber Muscle fiber (intrafusal, extrafusal) · Myofibril · Microfilament/Myofilament Sarcomere/ (a, i, and h bands; z and m lines) Myofilament (thin filament/actin, thick filament/myosin, elastic filament/titin, nebulin) Tropomyosin Troponin (T, C, I) Cells Myoblast/Myocyte · Satellite cell Other Desmin · Sarcoplasm · Sarcolemma (T-tubule) · Sarcoplasmic reticulum Smooth muscle Calmodulin · Vascular smooth muscle Other/ ungrouped Myotilin · Telethonin · Dysferlin · Fukutin · Fukutin-related protein muscle, DF+DRCT navs: anat/hist/physio, acquired myopathy/congenital myopathy/neoplasia, symptoms+signs/eponymous, proc

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