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Muscle System

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Created for the Unit of Competence: Confirm Physical Health Status as part of the Certificate IV in Massage Therapy

Created for the Unit of Competence: Confirm Physical Health Status as part of the Certificate IV in Massage Therapy

Published in: Health & Medicine, Automotive

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Transcript

  • 1. The muscular system Content by Megan McDonald
  • 2. Mens gymnastics
  • 3. The muscular system
  • 4. Muscle tissue
    • Smooth
    • Cardiac
    • Skeletal
  • 5. Smooth muscle tissue Image CC courtesy of @akay on Flickr http://www.flickr.com/photos/akay/244990069/
  • 6. Smooth muscle tissue
    • Non striated
    • Involuntary
    • Walls of hollow organs i.e. stomach
    • Walls of tubes and passage ways i.e. bronchioles, blood vessels, oesaphagus
  • 7. Cardiac muscle tissue Images CC courtesy of @akay on Flickr http://www.flickr.com/photos/akay/
  • 8. Cardiac muscle tissue
    • Striated
    • Involuntary
    • Fit together with tight junctions that promote fast conduction of electrical signals.
    • Heart
  • 9. Skeletal muscle tissue
    • Striated
    • Voluntary
    • Attached to bone via tendons, fascia or skin.
  • 10. Skeletal muscle function
    • Produce heat
    • Produce movement
    • Maintain body posture
    • Assists in joint stability
  • 11. Endomysium
    • Connective tissue surrounding each muscle fibre.
  • 12. Perimysium
    • Membrane surrounding each fascicle.
    • Fascicle – bundle of muscle fibres.
  • 13. Epimysium
    • Tough connective tissue
    • Surrounds entire muscle.
    • Extends to become tendons.
  • 14. Fascia
    • Outer fibrous sheath
    • Encloses a muscle
    • Separates muscles into compartments.
  • 15.  
  • 16. Excitation
    • The ability to receive and respond to stimulus
  • 17. Excitation
    • Motor nerves stimulate the muscle cell at the Neuromuscular Junction
    • Neurotransmitter releases from motor nerve
    • An electrical impulses spreads along sarcolemma
    • Muscle contracts.
  • 18. Contraction
    • The ability to shorten when stimulated.
  • 19. Contraction
    • Each muscle fibre contains myofibrils.
    • Myofibrils made up of sarcomeres.
    • Sarcomeres are formed by two protein filaments that contract and shorten.
    • The protein filaments are Actin and Myosin.
  • 20. Actin and Myosin.
    • Actin – thin and light
    • Myosin – thick and dark
    • Arranged in bands that slide past each other.
    • Calcium and Adenosine Triphosphate are required.
  • 21. Sliding Filament Theory
  • 22. Sliding filament theory 2
  • 23. Attachments
    • Each skeletal muscle has 2 attachments
    • Origin – Proximal Attachment
    • Insertion – Distal Attachment
  • 24.
    • When a muscle contracts one attachment moves toward another.
  • 25.
    • Distal to proximal – concentric contraction
    • Proximal to distal – eccentric contraction.
  • 26.
    • Prime Mover
    • Assistant mover
    • Neutraliser
    • Stabiliser
  • 27. Activity 6.2
    • Purple workbook.
    • Label the diagram.
  • 28. Activity 6.3
    • Marieb workbook chapter 6
    • Qu 1. p.103
    • Qu. 14 p. 110
    • Qu. 15 p. 115
  • 29. Soft tissue injuries
    • Grade I/Mild
    • Few ligaments torn
    • Stability maintained.
    Ligament Sprains 1.
  • 30. Soft tissue injuries
    • Grade II/moderate sprain
    • Partial rupture
    • Increased laxity
    • No gross instability
    Ligament Sprains 2.
  • 31. Soft tissue injuries
    • Grade III/severe sprain
    • Complete rupture
    • Gross instability
    Ligament Sprains 3.
  • 32. Soft tissue injuries
    • Grade I/mild strain
    • Few muscle fibres torn
    • Minimal loss of strength
    • Minimal pain on muscle contraction
    Muscle Strains 1.
  • 33. Soft tissue injuries
    • Grade II/moderate strain
    • About half of muscle fibres torn
    • Significant loss of strength and function
    • Moderate to severe pain on isometric contraction
    Muscle Strains 2.
  • 34. Soft tissue injuries
    • Grade III/severe strain
    • Complete tear of muscle
    • Significant weakness
    • Significant loss of function
    • Minimum to no pain on isometric contraction
    Muscle Strains 3.
  • 35. Homework!
    • Muscle chart
    • Quiz
  • 36. Gymnastique Olympic
  • 37.  

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