It's spelled excretory.
they work together
no
The muscular system enables movement of the skeletal system while the skeletal system provides structure for the muscular system.
the ribcage holds the lungs
they both work together 4 movement and protection of the boby
the skeletal system and the nervous system
muscular system and skeletal system
The Skeletal System and the Muscular System.
they hel us by sending messages to brain.
I think it is the circulatory system , muscular system, and the skeletal system.
Digestive and skeletal systems
it work together as the same by it main organ that is a bone