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.
- Created by: Philip Squires
- Created on: 06-03-13 14:41
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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.
- Amount - There are 206 bones in an adults human body.
- 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.
- The Bones
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