Biology-Human Body

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Bones

  • Your bones support your body and protect your vital organs.
  • Ribcage protects heart and lungs.
  • As you grow some of your bones fuse together.
  • Your bones are organs and are alive.
  • Over a period of about seven years all yours bones in your body are gradually replaced.
  • Bones contain: blood vessels, nerve cells and living bone cells called osteocytes.
  • These are all held together by non-living calcium and phosphorous.
  • Bone tissue adapts, bones may change shape slightly and specialise for different functions.
  • The spine is…

Comments

Olivia Spagat

Hope this helps!!

rimsha_R

thanx.:)

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