Skeletal System
The 206-bone framework that protects organs, stores minerals and enables movement.
Bone is living, actively remodelling tissue — it rebuilds itself throughout life in response to the loads placed on it. The skeleton protects vital organs, anchors muscles for movement, manufactures blood cells in its marrow, and serves as the body's main reservoir of calcium and phosphorus.
How it connects
Muscular system →
Resistance training is one of the few proven ways to increase bone density.
Endocrine system →
Hormonal changes strongly influence lifetime bone density, particularly around menopause.
Common goals
Common symptoms
Deep-dive guides in the skeletal system
Conditions involving this system
Symptoms involving this system
Did you know?
- • A quarter of all the bones in your body are in your hands.
- • Bone continuously remodels itself — most of the adult skeleton is replaced over roughly a decade.