Class 6 Biology Body Movements Muscles


  • Muscles are attached to the bones and is resposible for the movement of human body. There is change in the length of muscle due to contraction and relaxation.
  • If you move your arm touching your shoulder you will observe the buldging part on your arm, this is muscle due to contraction and it come back to its normal position if you strech your arm and muscle come to relax.

Picture showing contraction and relaxation of muscles

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