L9a Bones


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L9a Bones

  1. 1. BONES H/W = 1)Draw out a long bone, and label the parts 2) What role does this do in the long bone? A) Cartilage b) red marrow c) the periosteum 3) Why do we need calcium in our diet? 4) What is ossification?
  2. 2. Introduction <ul><li>How tall will you be? </li></ul><ul><li>Will you be petit or will you have thick, heavy bones? </li></ul><ul><li>As we have already mentioned in the previous chapter, bone/body size is an important factor in high-level sports </li></ul><ul><li>Bones do not stop growing until you are in your twenties. </li></ul>
  3. 4. The composition of a typical adult long bone
  4. 5. The composition of a typical adult long bone <ul><li>Cartilage – </li></ul><ul><li>Compact bone – </li></ul><ul><li>Marrow cavity – </li></ul><ul><li>Periosteum – </li></ul><ul><li>Spongy bone – </li></ul>
  5. 7. Key revision points <ul><li>Epiphysis </li></ul><ul><li>Diaphysis </li></ul><ul><li>Cartilage </li></ul><ul><li>Compact bone </li></ul><ul><li>Marrow cavity </li></ul><ul><li>Periosteum </li></ul><ul><li>Spongy bone </li></ul>
  6. 8. Objectives <ul><li>Name and locate the main bones of the human body </li></ul><ul><li>Examine the main functions of the skeleton </li></ul><ul><li>Understand the types of bones located in your skeleton </li></ul>
  7. 9. Introduction <ul><li>Without your skeleton you would be a shapeless sack of flesh </li></ul><ul><li>The skeleton has 206 bones </li></ul><ul><li>The bones are held together at joints by ligaments </li></ul><ul><li>Each arm & leg has three long bones </li></ul><ul><li>Male and female skeletons are slightly different: </li></ul>
  8. 10. The functions of the skeleton <ul><li>Support – frame work to keep body shape </li></ul><ul><li>Protection – cranium protects the brain, ribs protect your heart & lungs </li></ul><ul><li>Movement – muscles are attached to bones, when muscles contract the bones move </li></ul><ul><li>Blood production – some bones have red bone marrow, this makes red cells, white cells & platelets for blood </li></ul>
  9. 11. The four types of bones in your skeleton <ul><li>Long bones – </li></ul><ul><li>Short bones – </li></ul><ul><li>Flat bones – </li></ul><ul><li>Irregular bones – </li></ul>
  10. 12. Recap <ul><li>Know and be able to locate the main bones </li></ul><ul><li>Understand the the four functions of the skeleton </li></ul><ul><li>Understand the four different shaped bones in relation the their function </li></ul>