Multiple choice questions:

1. Rib cage protects our:
   1. lungs and heart
   2. brain
   3. spinal cord
   4. stomach and liver
2. The longest bone of the body is:
   1. ulna
   2. femur
   3. radius
   4. stirrup
3. The joint found in the shoulder:
   1. the ball and socket joint 
   2.   gliding joint
   3. hinge joint
   4. pivot joint
4. Muscles work in pairs by:
   1. contraction only
   2. expansion and contraction
   3. expansion only
   4. neither expansion nor contraction
5. The joints of skulls are:
   1. fixed
   2. movable
   3. gliding
   4. hinge