Special Senses: Taste

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Special SensesTaste Smell
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Olfaction - Smell

• Chemoreceptors in roof of nasal cavity
• Cells with long cilia
• Chemicals must be
  dissolved in mucus
  for detection

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Olfaction - Smell

• Detected smells are relayed to the olfactory bulb
  and transmitted via the olfactory nerve.
• Smells are interpreted by the olfactory cortex

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Taste

• Papillae
• Taste buds
• Gustatory hairs (long microvilli)

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Taste

• Chemicals dissolve in saliva
• Gustatory hairs detect relay message to brain

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Taste Receptors

• Sweet receptors
• Sugars
• Some amino acids
• Sour receptors
• Acids
• Bitter receptors
• Alkaloids
• Salty receptors
• Metal ions
• Umami
• Glutamate

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Other Tastes?