structure of the bone
- Created by: Chantelle..
- Created on: 15-01-19 09:20
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- structure of the bone
- has a shaft of compact bone
- enlarged spongy ends
- in thin irregular sheets
- = trabeculae
- in thin irregular sheets
- underneath is growth plates
- responsible for bone growth
- enlarged spongy ends
- centre of bone shaft
- = bone marrow
- site of blood cell production
- stem cells are found here
- stem cells can develop into any types of cells
- stem cells are found here
- site of blood cell production
- = bone marrow
- ends of the bones are covered in cartilage
- acts as a protective layer
- collagen and chondrin
- give bones elasticity
- proteins
- osteoblasts gradually invade cartilage
- depositing mineral salts
- e.g calcium phosphate
- once depositing minerals
- osteoclasts become osteocytes
- osteocytes- help maintain bone as it grows
- osteoclasts become osteocytes
- happens of the early skeleton
- depositing mineral salts
- osteoclast
- removes bone
- uses enzymes to dissolve bone salts
- occurs when we take up a new physical activity
- uses enzymes to dissolve bone salts
- work with osteoblasts to re sculpt skelteton
- osteoblasts and osteoclasts
- bone forming and bone removing cells
- work in harmony
- osteoblasts and osteoclasts
- removes bone
- osteoblasts are influenced by oestrogen levels
- female hormone promotes activity of osteoblasts
- when levels drop
- balance swings in favour of oesteoclasts
- bone becomes thinner and more like honeycomb
- bone becomes more brittle
- can result in osteoporosis
- balance swings in favour of oesteoclasts
- has a shaft of compact bone
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