BONE GROWTH

CHILDS PLAY

• Bones begin as hyaline cartilage.
• As children grow the cartilage is slowly replaced by bone.
• On average bones grow completely in 18 to 25 years.

HARD KNOCK LIFE

• As more cartilage grows older cartilage becomes ossified.
• Bones change shape as they grow.

IT'S WHAT'S INSIDE THAT COUNTS

• The medullary cavity forms in the womb.
• Red blood cells are formed in the cavity.
• As people get older the cavity stores fat.
• This fat is called marrow.

THE GROWTH STOPS HERE

• Growth happens mainly in the epiphyseal plate.
• This is also known as the growth plate.
• The epiphyseal plate is made up of articulate cartilage.
• Pressure from other bones forces the plate to
• change the shape of the bone as it grow