It prevents you from collapsing like a blob of jello.
It has bones and it helps your body system and helps you move.
The excretory system helps in the removal of waste from the body.
The circulatory system helps move oxygen throughout your body.
The circulatory system!
The endocrine system.
Lymphatic system
skeletal system
skeletal system
circulatory system
skeletal system
The lymphatic system helps fight off microorganisms.
The immune system.