not getting any calium and not excersising regularly.
Osteoporosis
The skull belongs to the skeletal system.
The skeletal system itself is an organ system. Some schemes combine the skeletal system with the muscular system to make the musculoskeletal system.
The skeletal system are your bones.
skeletal system* bones. :)
the skeletal system is a system in the body .
skeletal!!
The skeletal system.
skeletal system
Cartilage is from the skeletal system.
there are no organs in the skeletal system
Vertebrates are those that have a skeletal system.