GCSE PE EDEXCEL SKELETAL SYSTEM

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FUNCTIONS

  • MOVEMENT

Joints (BONE TO BONE) and Tendons (BONE TO MUSCLE) allow a variety of movements

  • SUPPORT

The skeletal system supports the body in a variety of positions: complex (eg a handstand) and simple (eg sitting down)

The skeletal system give the body shape and acts as a framework

  • PROTECTION

The skeletal system prevents the vital organs from getting damaged 

Eg, the cranium protects the brain

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JOINTS

  • FIXED

Eg Cranium/Skull

  • SLIGHTLY MOVEABLE

Eg Vertebrae

  • SYNOVIAL/FREELY MOVEABLE

Eg Shoulder

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SYNOVIAL JOINTS

  • BALL AND SOCKET

Movement in all direction, eg, shoulder 

  • HINGE

Flextion and extention only, eg, knee 

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TENDONS LIGAMENTS AND CARTILAGE

  • TENDONS

Connects muscle to bone, used for joint stability

  • LIGAMENTS

Connects bone to bone

  • CARTILAGE

Covers the end of the bone to prevent rubbing and also acts as a shock absorber 

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MOVEMENT

  • FLEXTION
  • EXTENTION
  • ABDUCTION (Abducted by aliens)
  • ADDUCTION (Adding to your body)
  • ROTATION
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EFFECTS OF EXERCISE

  • INCREASED BONE DENSITY
  • LIGAMENTS AND TENDONS GET STRONGER
  • REDUCED RISK OF OSTEOPOROSIS (brittle bones) 
  • INCREASED JOINT FLEXABILITY 
  • INCREASED BONE STRENGTH
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INJURIES

  • FRACTURES

Simple, compound, open and stress

  • DISLOCATION

When the bone is forced out of its normal position

  • TENNIS AND GOLFERS ELBOW

Overuse

  • SPRAINS

Damaged ligament

  • TORN CARTILAGE
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TREATMENT FOR INJURIES

  • RICE 

Rest Ice Compression Elevation 

This reduces swelling 

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