The bones in a joint are held firmly by

Cartilage is slippery, 

What is the name of the fluid found in the cartilage?

Where can we find cartilage?

The following are first aid for ankle sprain EXCEPT:

What can decrease the synovial fluid?

Why would a doctor use an X-ray first instead of surgery?

Click the hinge joints.

Match the following:

Energy that can pass through muscle and skin.