movement system

for class xi a3 and xi a5

1.  How many bones does the adult human skeleton consist of?

2.  Mention the two main parts of human skeleton!

3.  What kinds of bones does each of part consist of?

4.  Mention the functions of skeleton!  

5.  How are bone formed?  

6.  How are mechanisme contraction of skelet muscle?

Do it on the answersheet and collage on Monday, 29th Nov 2010