| 1.Bones
and muscles work together.
2.Muscles can pull bones but not push them. 3.As one muscle movesthe other one relaxes. 4.You need oxegen for your muscles to move. 5.Your heart is a muscle. 6.When you smile you move 14 muscles. |
 |
Muscular
System
Austin
| 1.Bones
and muscles work together.
2.Muscles can pull bones but not push them. 3.As one muscle movesthe other one relaxes. 4.You need oxegen for your muscles to move. 5.Your heart is a muscle. 6.When you smile you move 14 muscles. |
|
This is a picture of the human heart
