Osteocyte
Sends signals of bone formation or bone resorption to the bone surface
Central (Haversion) canal
Sits in the centre of the osteon where blood vessels, arteries and veins travel through to send signals throughout the compact bone
Periosteum
Layer of connective tissue important for repairing and growing bones
OsteoBlast
Builds bone
OsteoClast
Consumes bone
Invertebral disc (part of human skeleton)
Acts as a shock absorbing system - joins the vertebrae and allows movement between them