B5 Revision (A good start)

A good start on a mind map for B5 Revision on the OCR gateway exam board for tripel award GCSE.

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  • B5 Revision
    • The Bones
      • Amount - There are 206 bones in an adults human body.
        • Link to the bone diagram
      • Bones are made of living cells, they contain deposits of calcium phosphate and proteins.
        • Bones start of a cartilage which then gets replaced by bone in a process called ossification.
        • You can have a condition called osteoporosis which is when your bones lose calcium making them more brittle and susceptible to  getting damaged.
      • Functions of the skeleton are: Protection, support, making blood in the long bones and movement.
        • Advantages of an external skeleton:       It can easily grow with the body, It's easy to attach  muscles to it, It's more flexible than an external skeleton and it gives the body support and framework.
    • Joints and Muscles
      • Types of joint: Synovial joints, Ball and socket joint and hinge joints. Synovial joints are the most common in the human body.
      • The bones in a synovial joint are held together with ligaments, which have a high strength. The ends of the bones are covered in cartilage which acts as a shock absorber. The synovial membrane release synovial fluid which lubricates the join allowing them to move easier.
      • Link to a diagram of a synovial joint.
      • Ball and socket joints move in all directions. Link to a diagram of a ball and socket joint.
      • Hinge joints can go backwards and forwards, but not side to side.
      • Muscles are  attached to bones by tendons. Muscles can move a joint by contracting, this pulls it muscles can not push them. Muscles come in pairs (called antagonistic pairs) meaning they move in opposite directions.
    • Blood Movement And Oxygen
      • Link to the circulatory system diagram.
      • Link to the cardiac cycle diagram.
    • The Heart
      • William Harvey Summary Power Point Link
      • Claudius Galen Summary Flashcards link.
    • Digestion
      • Link to digestive system diagram
      • Carbohydrases are enzymes which break down carbohydrates(i.e. Starch) into simple sugars.
      • Proteases break down proteins into amino acids .
      • Lipases break down fats into fatty acids and glycerol.
      • Link to carbohydrase diagram.
      • Link to protease diagram.
      • Link to liapase diagram.

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