A is femur B is pelvis
C is tibia
D is ?
This diagram shows the muscles in a person's leg
1 On the diagram, label these bones:
the femur , the pelvis , the tibia

3 On the diagram, label a ball-and-socket joint.

4 Look carefully at the diagram. What will happen at the knee joint when muscleA contracts?

5 What will happen at the knee joint when muscle B contracts?

6 Which of these pairs of muscles are antagonistic pairs? Underline the two
correct answers.
A and B A and D B and C C and D C and A
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