Muscular System I

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Author:
mrflibbles
ID:
178563
Filename:
Muscular System I
Updated:
2012-10-20 13:31:55
Tags:
name muscles muscle function
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Description:
Identify the Function of Muscles
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  1. External Intercostals


    Elevates Ribs; Inspiration
  2. Internal Intercostals


    Depresses Ribs; Expiration
  3. Diaphragm


    Inspiration; Depresses floor of thorax
  4. Trapezius


    Elevates, Depresses, Retracts, Rotates, Fixes Scapula; Extends Neck
  5. Serratus Anterior
    • Protracts and Rotates Scapula; Elevates Ribs
  6. Pectoralis Minor


    Depresses Scapular or Elevates Ribs
  7. Latissimus Dorsi


    Adducts and Medially Rotates Arm; Extends Shoulder
  8. Pectoralis Major


    Flexes Shoulder; Abducts and Medially Rotates Arm; Extends Shoulder From Flexed Position
  9. Deltoid




    Flexes and Extends Shoulder; Abducts and Medially and Laterally rotates Arm
  10. Teres Major
    • Extends amd Medially Rotates Humerus; Swings the Arm
  11. External Obliques
    • Flexes and Rotates Vertebral Column; Compresses Abdomen; Depresses Thorax
  12. Internal Obliques


    Flexes and Rotates vertebral column; Compresses Abdomen; Depresses thorax
  13. Transversus Abdominis


    Compresses Abdomen
  14. Rectus Abdominis
  15. Flexes Vertebral Column; Compresses Abdomen 
    Six Pack
  16. Splenius Capitus


    Extends, Rotates, and laterally flexes head
  17. Sternocleidomastoid
    • 1) Laterally flexes head and neck to same side and rotates head and neck
    • 2) Flexes Neck
  18. Frontalis
  19. Moves Scalp and Elevates Eyebrows
  20. Orbicularis Oculi
    • Closes Eyelids
  21. Obicularis Oris


    Closes Lips
  22. Masseter
    • Elevates and Protracts Mandible
  23. Buccinator
    • Retracts angle of mouth; Flattens Cheeks (Whistle)
    • #14 right next to masseter
  24. ROTATOR CUFF MUSCLES
    • Subscapularis, Infraspinatus, Teres Minor, Supraspinatus
    • (SITS)
  25. Subscpularis 
    • Medially Rotates Arm; Holds head of humerus in place
  26. Infraspinatus


    Laterally Rotates Arm; Holds head of humerus in place
  27. Supraspinatus
    Abducts Arm; Holds Head of humerus in place
  28. Teres Minor
    Laterally roates and adducts arm: Holds Head of humerus in place
  29. Biceps Brachii
    • Flexes shoulder and elbow; supinates forearm and hand
  30. Brachialis
    • Flexes elbow
    • (little strip right next to Biceps Brachii)
  31. Flexor Digitorum Superficialis
    • Flexes Fingers
    • (on back hand-supinated)

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