Ch8B.txt

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Author:
aphy101
ID:
264494
Filename:
Ch8B.txt
Updated:
2014-03-01 12:19:22
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profmwinston
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Description:
Ch 8 - Joint Movements
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  1. Describe how movements occur at joints.
    When the muscle contracts, its fibers pull its moveable end toward its fixed end
  2. What is the moveable end of a muscle?
    Insertion
  3. What is the fixed end of a muscle?
    Origin
  4. Bending parts at a joint so that the angle between them decreases and the parts come closer together. (ex: bending the knee)
    Flexion
  5. Moving parts at a joint so that the angle between them increases and the parts move farther apart. (ex: straightening the knee)
    Extension
  6. The extension of the parts at a joint beyond the anatomical position. (ex: bending the head back beyond the upright position); also used to describe injury.
    Hyperextension
  7. Movement at the ankle that brings the foot closer to the shin. (ex: rocking back on one's heels)
    Dorsiflexion
  8. Movement at the ankle that brings the foot farther from the shin. (ex: standing on one's toes)
    Plantar Flexion
  9. Moving a part away from the midline. (ex: lifting the upper limb up horizontally); or from the axial line of the limb. (ex: spreading the fingers or toes)
    Abduction
  10. Moving a part toward the midline. (ex: returning the upper limb down from the horizontal position); or toward the axial line of the limb. (ex: moving the fingers or toes closer together)
    Adduction
  11. Moving a part around an axis. (ex: twisting the head from side to side); medial _____ is the turning of a limb on its longitudinal axis so its anterior surface moves toward the midline; lateral _____ is the turning of a limb on its longitudinal axis in the opposite direction.
    Rotation
  12. Moving a part so that its end follows a circular path. (ex: moving the finger in a circular motion without moving the hand)
    Circumduction
  13. Rotation of the forearm so the palm is upward or facing anteriorly. (ex: in anatomical position)
    Supination
  14. Rotation of the forearm so the palm is downward or facing posteriorly. (ex: hands positioned so thumbs are toward body)
    Pronation
  15. Turning the foot so the plantar surface faces laterally.
    Eversion
  16. Turning the foot so the plantar surface faces medially.
    Inversion
  17. Moving part forward. (ex: thrusting the head forward)
    Protraction
  18. Moving a part backward. (ex: pulling the head backward)
    Retraction
  19. Raising a part. (ex: shrugging the shoulders)
    Elevation
  20. Lowering a part. (ex: drooping the shoulders)
    Depression

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