Muscle groups and what they do

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Author:
12olokun28
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41006
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Muscle groups and what they do
Updated:
2010-10-10 01:42:51
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Anatomy
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rotator cuff, etc...
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  1. What is the origin of the subscapularis-rotator cuff?
    supraspinous fossa
  2. What is the insertion of the subscapularis?
    Humerus
  3. What is the action of the subscapularis?
    • Abduction at the shoulder
    • Medial rotation at shoulder
  4. What is the orgin of the supraspinatus muscle?
    Supraspinous fossa
  5. Where is the insertion of the supraspinous muscle?
    • Humerus
    • Greater tubercle
  6. What is the action ofthe supraspinous muscle?
    Abduction at the shoulder
  7. What is the origin of the infraspinatus muscle?
    Medially to the infraspinous fossa of the scapula
  8. Where is the insertion of the infraspinatus muscle?
    Humerus
  9. What is the action of the infraspinatus muscle?
    Lateral rotation at the shoulder
  10. What is the origin of the teres minor?
    Scapula
  11. Where is the insertion of the teres minor?
    Humerus
  12. What is the action of the teres minor?
    Lateral rotation at the shoulder
  13. What muscles make up the rotator cuff?
    • Subscapularis
    • Supraspinatus
    • Infraspinatus
    • Teres minor
  14. Which muscles make up the oblique & rectus?
    • Diaphragm
    • Rectus abdominis
    • External obliques
    • Internal obliques
    • Transverse abdominis
  15. What is the action of the diaphragm?
    Contraction expands thoracic cavity
  16. Where is the origin of the rectus abdominis?
    Superior surface of pubis around symphysis
  17. What is the insertion of the rectus abdominis?
    Inferior surface of cartilages (ribs 5-7) & xipoid process
  18. What is the action of the rectus abdominis?
    Depresses ribs, compresses abdomen, flexs vertebrae column
  19. Where is the origin of the external oblique?
    Lower 8 costae
  20. What is the insertion of the external oblique?
    Illiac crest
  21. What is the action of the external oblique?
    Compresses abdomen
  22. Where is the origin of the internal obliques?
    Illiac crest
  23. What is the insertion of the internal oblique?
    Xiphoid process
  24. What is the action of the internal oblique?
    • Compresses abdomen
    • Rotates vertebral column
  25. What is the action of the transverse abdominis?
    Compresses abdomen
  26. What muscles make up the quadriceps?
    • Rectus femoris
    • Vastus lateralis
    • Vastus medialis
    • Vastus intermedius
  27. Where is the origin of the rectus femoris?
    Inferior illiac spine
  28. What is the insertion of the rectus femoris?
    Patellar tendon
  29. What is the action of the rectus femoris?
    • Extension at knee
    • Crosses hip & knee joint
  30. Where is the origin of the vastus lateralis?
    Femur
  31. What is the insertion of the vastus lateralis?
    Patella
  32. What is the action of the vastus lateralis?
    Extension at knee
  33. What is the action of the vastus medialis?
    Extension of knee
  34. What is the action of the vastus intermedius?
    • Extension of knee
    • (knee reflex)
  35. What muscles make up the hamstrings?
    • Biceps femoris
    • Semitendinosus
    • Semimembranosus
  36. Where is the origin of the biceps femoris?
    Tuberosity of ischium
  37. What is the insertion of the biceps femoris?
    Head of fibula
  38. What is the action of the biceps femoris?
    • Flexion at the knee
    • Laterally rotates knee

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