Muscle Contraction

• Muscles act in what?


  antagonistic pairs
• What is skeletal muscle aka?


  striated , striped, or voluntary muscle
• What is skeletal muscle?


  the type of muscle you use to move
• skeletal muscle example?


  biceps
• what are skeletal muscles attached to?


  attached to bones by TENDONS
• What do ligaments do?


  Attach bones to other bones, to hold them together
• What do pairs of skeletal muscles do?


  Contract and relax to move bones at a joint

  • the bones of the skeleton are incompressible (rigid) so they act as levers, giving the muscles something to pull against
• why do muscles work in pairs?


  because they can only pull when they contract- they CANNOT PUSH
• What are antagonistic pairs?


  Muscles that work together to move a bone
• What is the agonist ?


  the contracting muscle in an antagonistic pari
• what is the antagonist?


  the relaxing muscle in an antagonistic pair
• muscles act as what?

  effectors
• 3 types of muscle?

  smooth, cardiac, skeletal
• what stimulate muscle to contract?

  neurones