1. What is a teratogen?
- Substances that exert an adverse influence on development e.g drugs, smoking, disease and maternal stress
- Substances that exert a positive influence on development e.g enriched environment, nutrition and exercise
- A chemical imbalance in the pregnant body which goes on to affect the infant
- A genetic mutation in the mother which causes future disabilitys and birth complications in the infant
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2. 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
3. What is the role of the limbic system?
- Processing auditory and visual stimuli
- Regulating emotions and frontal lobes for advanced cognitive functioning
- Reflexes and responses to stress
- Abstract thought
4. What effects does the environment have on the prenatal brain?
- The PN brain is sensitive to negative and positive influences, with cortical thickness differing according to the environment
- The PN brain is especially sensitive to negative environmental influences affecting cortical thickness
- The PN brain is especially sensitive to positive environmental influences affecting cortical thickness
- The environment has not shown to have an effect on the PN brain
5. What is the darwinian reflex?
- When a baby is held with their feet barely touching a surface, they will make stepping motions
- When the palm of a babies hand is stroked, they make a strong fist and can be raised to standing if grasped
- When a baby is dropped/hears a loud noise, they extend limbs and fingers whilst drawing their head back as a protective reflex
- When a baby will grab anything that comes in close proximity to their face, a protective reflex