the muscular system. bundle of muscle fibers muscle fiber (cell) myofibril sarcomere gross anatomy...
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The Muscular The Muscular SystemSystem
bundle of muscle fibers
muscle fiber(cell)
myofibril
sarcomere
Gross Anatomy of Skeletal Muscle
Connective Tissue Sheaths Connective Tissue Sheaths
–Endomysium–Perimysium–Epimysium
Collagen fibers of all 3 layers come together at each end of muscle to form a tendon or aponeurosis.
Basic Basic FeaturesFeatures
Nerve & blood supply
Attachments– Origin
– Insertion
Muscle Fiber AnatomyMuscle Fiber Anatomy
Sarcolemma • Sarcoplasm • Myoglobin• Transverse tubules (T-tubules)
Myofibrils • Myofilaments
– Two types 1.Actin filaments (thin filaments)2.Myosin filaments (thick filaments)
Myofibril
SarcomeSarcomerere A band
SarcomeSarcomerere I bands
Z lines
SarcomeSarcomerere
Actin and Myosin FilamentsActin and Myosin Filaments
myosinactin
Myosin (Thick) FilamentMyosin (Thick) Filament
Actin (Thin) FilamentActin (Thin) Filament
axon
plasma membrane
myofibrils
sarcomere
T tubules
sarcoplasmic reticulum
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