Calcium
Provides hardness and resistance to crushing.
Muscles
Attach to bones and use them as levers to move the body
Collagen (protein)
Provides strength and resilience
Infants
Have more than 300 bones at birth
Breastbone
Protects the lungs and heart
Diaphysis
The shaft of the bone
Bone marrow
Produces millions of blood cells per second.
Epiphyseal Plate
Areas made of cartilage allowing for the growth of the bone growth plate.
Ligaments
( bone-bone )
Tendons
( bone-muscle )
Periostern
Hard outer covering
Epiphysis
Ends of the bones
Diaphysis
The shaft of the bone
Articular Cartilage
Cushions the ends of the bones and allows for smooth movement
Osteocyte
Basic bone cell
Haversian
Canal opening
Axial Skeleton (80 bones)
Skull, vertebral column, rib cage
Appendicular Skeleton (126 bones)
Bones of upper & lower limbs
Long bones
Longer than they are wide, all limb bones
Short bones
Roughly cubed shaped, bones of the wrist and the ankle
Flat bones
Thin, flattened, usually a bit curved
Scapula
Shoulder blade
Sternum
Breast bone
Irregular bones
Weird shapes, vertebrae, hip bones, 2 skull bones
Compact Bone
Spongy Bone
Composed of irregular and interconnected channels
Extracellular Matrix
Collagen and Ca
Red bone marrow
blood cell production