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The Muscular System.

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Presentation on theme: "The Muscular System."— Presentation transcript:

1 The Muscular System

2 Gross Anatomy of Skeletal Muscle
bundle of muscle fibers muscle fiber (cell) myofibril sarcomere

3 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.

4 Basic Features Nerve & blood supply Attachments Origin Insertion

5 Muscle Fiber Anatomy Sarcolemma Sarcoplasm Myoglobin
Transverse tubules (T-tubules) Myofibrils Myofilaments Two types Actin filaments (thin filaments) Myosin filaments (thick filaments)

6 Myofibril

7 A band Sarcomere

8 Sarcomere I bands

9 Z lines Sarcomere

10 Actin and Myosin Filaments

11 Myosin (Thick) Filament

12 Actin (Thin) Filament

13 axon myofibrils sarcomere plasma membrane

14 T tubules sarcoplasmic reticulum

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