need help on worksheet

The bones that surround and protect the brain are referred to as the             bones.

 

  The bones that form the underlying structure of the face are referred to as the             bones.

 

  With one exception, the bones of the skull articulate with each other through joints known as            . The exception is the            .

 

  There are numerous holes in the skull called            .

 

  What are the functions of these holes?