Answers

2014-08-10T14:13:45+08:00
The SKELETAL SYSTEM protects the inner body organs from injuries.

The nervous system acts as the control system of the body; it allows your body to respond to changes.
The excretory system secretes hormones, wastes, etc.
The circulatory systems aids in the transport of nutrients, oxygen etc. to various parts of the body (besides the transport of blood, obviously).
1 5 1