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Range of Movement. By the end of this lesson, I will be able to: Understand how muscles work together to move my bones. Know the different ranges of movement my body allows. Recap. How do we move? Muscles pull on our bones. One contracts while the other relaxes. Muscles as Pairs.

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range of movement

Range of Movement

By the end of this lesson, I will be

able to:

Understand how muscles work together to move my bones.

Know the different ranges of movement my body allows.

recap
Recap

How do we move?

  • Muscles pull on our bones.
  • One contracts while the other relaxes.
muscles as pairs
Muscles as Pairs
  • Muscles work in pairs-

antagonistic muscle action.

  • The muscle that contracts is known as the primemover or the agonist (In agony!!).
  • The muscle that relaxes is known as the antagonist.
  • The prime mover is also helped by other muscles called synergists which hold the body in position for the prime mover to work smoothly.
muscles as pairs4
Muscles as Pairs
  • A voluntary muscle usually works across a joint.
  • It is attached to both bones by strong cords called tendons.
muscles as pairs5
Muscles as pairs
  • When a muscle contracts, usually one bone moves.
  • The other is stationary.

S-Cool! - GCSE PE Revision - Quicklearn

  • The origin is where the muscle joins the stationary bone.
  • The insertion is where the muscle joins the moving bone.
muscles as pairs6
Muscles as pairs
  • When a muscle contracts, the insertion moves towards the origin.
range of movement8
3. Adduction – Moving towards an imaginary centre line.

4. Abduction – Moving away from an imaginary centre line.

Range of movement
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