TB3 Lecture 2 Brain Development
- Created by: mint75
- Created on: 25-04-15 19:01
Other questions in this quiz
2. Why is the pregnant person most sensitive to radiation at this time?
- This is the critical period of prenatal brain development, with neural proliferation and migration, migration not occuring correctly has serious effects
- As the infants developing brain is at peak plasticity
- As this is the period in which synaptogenesis occurs
3. What is a teratogen?
- A genetic mutation in the mother which causes future disabilitys and birth complications in the infant
- Substances that exert an adverse influence on development e.g drugs, smoking, disease and maternal stress
- A chemical imbalance in the pregnant body which goes on to affect the infant
- Substances that exert a positive influence on development e.g enriched environment, nutrition and exercise
4. What are the three stages (in order) of cellular development
- Proliferation, cell migration, myelinisation
- Myelinisation, Cell migration, proliferation
- Synaptogenesis, Myelinisation, Cell migration
- Synaptogenesis, Cell migration, proliferation
5. What is apoptosis and why does it occur?
- Programmed cell death of poorly stimulated neurons; increases efficiency of functioning
- Increase of brain surface; to increase cell stimulation
- The formation of sulci and gyri to accommodate more neurons
- Buildings of connections between synapses to 'finely tune' the brains 'circuitry'
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