TB10 P&C Lecture 2; Olfaction and taste

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

1. How do we smell odors composed of more than one molecule?

  • Glomeruli projections overlap in olfactory cortex and individual cortical neurons receive input from multiple glomeruli. The response pattern is associated with the object
  • Glomeruli projections overlap in somatosensory cortex and individual cortical neurons receive input from multiple glomeruli. The response pattern is associated with the object
  • Glomeruli projections overlap in olfactory cortex and individual cortical neurons receive input from multiple glomeruli. The overlapping activation is associated with the object
  • Glomeruli projections overlap in somatosensory cortex and individual cortical neurons receive input from multiple glomeruli. The overlapping activation is associated with the object
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Other questions in this quiz

2. Each OSN...?

  • Expresses just one type of receptor
  • Are resistant to damage due to highly internalised structure
  • Has broad non-specific connections
  • Receive input from glomeruli

3. What is the core concept of shape theory?

  • 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
  • A two-stage theory. Molecules must be the right shape to bond to receptor sites but bond energies determine final activation level.

4. Which of these is NOT a basic taste?

  • Salt (Sodium ions)
  • Sweet (Glucose, fructose)
  • Bitter (poisonous, no single molecule!)
  • Umami (amino acids, glutamate, aspartate etc)
  • Strong (mono-chemical tastes)
  • Sour (protons found in acids)

5. When you smell a gas leak what are you actually smelling?

  • Sodium chloride
  • Memphetamine
  • Butyl mercaptan
  • Methane

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