TB3 Lecture 2 Brain Development

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  • Created by: mint75
  • Created on: 25-04-15 19:01

1. What does the process of myelinisation do/improve?

  • Produces nerve cells at a rate of 250,000pm
  • Insulates the cell and improves synaptogenesis (cell communication)
  • Allows cells to acquire specialised functions
  • Adds to the weight of the total brain
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2. As the cortex grows, what happens to the brain?

  • Infolding to accommodate rapid growth
  • Vesicles develop
  • Synaptic pruning
  • Synaptogenesis occurs

3. What did research by Perry & Pollard (1998) show?

  • The children who suffered severe global neglect had much smaller frontal occipital circumferences and growth/organisation than conrtols
  • The children who suffered severe global neglect had much larger frontal occipital circumferences and growth/organisation than conrtols
  • The children who suffered severe global neglect had smaller brains than controls
  • The children who suffered severe global neglect had larger brains than controls

4. When does brain growth begin in utero?

  • 18 days
  • 8 months
  • 14 days
  • 6 months

5. What is apoptosis and why does it occur?

  • The formation of sulci and gyri to accommodate more neurons
  • Buildings of connections between synapses to 'finely tune' the brains 'circuitry'
  • Programmed cell death of poorly stimulated neurons; increases efficiency of functioning
  • Increase of brain surface; to increase cell stimulation

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