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Muscle Tissue

Muscle Tissue. Chapter 10. Functions. Produce movement Maintain body posture and positioning Soft tissue support Guard entrances and exits thermoregulate. Skeletal Muscle Features. Derived from myoblasts Muscle fiber is a muscle cell

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Muscle Tissue

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Presentation Transcript

  1. Muscle Tissue Chapter 10

  2. Functions • Produce movement • Maintain body posture and positioning • Soft tissue support • Guard entrances and exits • thermoregulate

  3. Skeletal Muscle Features • Derived from myoblasts • Muscle fiber is a muscle cell • Skeletal muscle fibers extend the length of the muscle • Multinucleate • Plasma membrane is called the sarcolemma • Cytosol is called the sarcoplasm • Transvers (T) Tubules transmit action potentials to interior of muscle fiber • Sarcoplasmic reticulum (smooth ER) is specialized to store Ca2+ • Connective tissue coverings

  4. Organization of Skeletal Muscle

  5. Organization of Skeletal Muscle Muscle fiber myofibril myofilament actin & myosin

  6. Sarcomere • Contractile unit of muscle • Specialized arrangement of actin and myosin

  7. Myofilaments

  8. Organization Overview

  9. Sliding Filament Theory

  10. Overview of Contraction

  11. Neuromuscular Junction

  12. Active Site

  13. Excitation Contraction Cycle

  14. Muscle Tension

  15. Muscle Twitch

  16. Motor Unit Recruitment

  17. Isotonic Contractions

  18. Isometric Contraction

  19. Muscle Metabolism

  20. Muscle Performance

  21. Cardiac & Smooth Muscle

  22. Overview of Muscle Types

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