TB10 P&C Lecture 2; Olfaction and taste

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  • Created by: mint75
  • Created on: 24-05-16 11:11

1. The olfactory cleft...?

  • Oderant molecules 'stick to' this when air comes into contact with it
  • Part of the olfactory sensory neuron, each OSN has a single type of odor receptor.
  • Covered in mucus and is fragile
  • Force air flow against epithelium
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2. What is the flow of air through your nose disrupted by?

  • Olfactory bulb
  • Turbinates
  • Olfactory cleft
  • Olfactory epithelium

3. What is the core concept of swpiecard theory?

  • A two-stage theory. Molecules must be the right shape to bond to receptor sites but bond energies determine final activation level.
  • Receptor specificity is based on molecular structure. Oderants must have the right shape to activate the receptor, there is a certain receptor for each molecule
  • Molecules with the same IR vibrational spectrum should smell similar, same shape diff vibrations smell different. Bond energies determine activation level

4. Where do OSN axons project to?

  • Glomeruli in the olfactory cleft
  • Glomeruli in the olfactory bulb
  • Glomeruli in the olfactory epithelium
  • Glomeruli in the somatosensory cortex

5. Is there evidence suggesting lateralisation of the tongue?

  • a
  • Yes, but not clearly defined
  • a
  • No, it is not clear
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