Fill in the blanks:
(1) Small bones that make up the back one are known as ..............
(2) Give an example of pivot ***** ...............................
(3) Movement is brought about by the contraction and relaxation of ............
(1) Small bones that make up the back one are known as vertebras
(2) Give an example of pivot * *The between head and neck is a pivot joint**
(3) Movement is brought about by the contraction and relaxation of muscles.