10.2 muscles- organization of skeletal muscle
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skeletal muscle contains
–Skeletal muscle tissue (primarily) –Connective tissues –Blood vessels –Nerves
What are three layers of skeletal muscle
– Epimysium – Perimysium – Endomysium
Describe the epimysium
– Layer of collagen fibers that surrounds the muscle – Connected to deep fascia – Separates muscle from surrounding tissues
Describe the permysium
– Surrounds muscle fiber bundles (fascicles) – Contains ▪ Collagen fibers ▪ Elastic fibers ▪ Blood vessels ▪ Nerves
Describe the endomysium
– Surrounds individual muscle cells (muscle fibers) – Contains ▪ Capillary networks ▪ Myosatellite cells (stem cells) that repair damage ▪ Nerve fibers
collagen fibers come together At the ends of muscles to form
A tendon (bundle) ▪ Or aponeurosis (sheet)