P&C TB10 Lecture 2

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  • Created by: May2714
  • Created on: 24-05-16 12:59

1. Why is memory for smells so strong?

  • Because cells in the olfactory bulb project directly to areas associated with control, emotion and memory (piriform cortex, amygdala, hippocampus)
  • Because there are more connections between the olfactory bulb and hippocampus
  • Because connections between the olfactory bulb and hippocampus are much faster (axons are highly myelinated)
  • Because cells in the olfactory bulb project directly to other sensory areas (somatosensory cortex, primary auditory cortex, primary visual cortex)
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Other questions in this quiz

2. What is the role of turbinates?

  • To stop the flow of air to allow time for olfactory receptors to detect oderants
  • To move mucus
  • To break up the flow of air and force it against the olfactory epithelium
  • To force air into the lungs

3. What is the swipecard model of odor receptors?

  • Molecules might have to be the right shape to ‘dock’ with receptor sites but then bond energies determine the final activation level
  • Whether a odorant smells the same or different to another is based on its IR vibrational spectrum
  • Lock and key theory - whether an odorant molecule smells the same or different to another is based on whether it has a complementary shape to the receptor binding site of the OSN

4. Each OSN has how many types of oder receptor(s)?

  • 3
  • 1
  • 5
  • 2

5. What 2 things CAN'T you smell?

  • Methane and carbon monoxdie
  • Methane and isobutylmethoxypyrazine
  • Carbon monoxide and isobutylmethoxypyrazine
  • Carbon monoxide and menthol

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