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Natural Science - Year I

Unit 23: Vesalius and Physiology

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Lab: Dissection of a Frog (or other Specimen)


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Natural Science Unit 23 Laboratory Activity: Sensory Perception

Goal: To measure the location of taste sensors in the tongue

Materials and Equipment:

  1. Toothpicks or Cotton Swabs
  2. Vinegar -- sour
  3. Salt
  4. Sugar
  5. Grapefruit or orange rind (the white stuff) -- bitter
  6. Water
  7. A partner
  8. Blindfold
  9. "Map" of the tongue

Procedures:

If you have time, repeat the experiment but use cotton filters to block the sense of smell. Note whether the ability to distinguish tastes changes.

Report:

After describing your procedure, summarize your results as much as possible.