 Support  Protection

 Movement  Makes blood Cells

 Bones grow and replace cells on a continual basis

 Types  Ball and socket  Condyloid  Gliding  Hinge  Pivot  Saddle

 Muscles  long cells full of mitochondria bound together in bundles  Tendons  connect the muscle to the bones  Ligaments  attach bones to bones

 Muscles do not push they only contract and relax  work in pairs to produce movement across a joint  Bicep-Tricep

 Muscle Strength  With a partner investigate how quickly your muscles fatigue when exercised  Title  Complete the chart  Calculate your average times  Write a conclusion