Which Is TRUE About Olfactory Receptors

question 73

Multiple Choice

Which is TRUE about olfactory receptors?

• A) They can discriminate only four primary chemicals - sweet, sour, salty, and bitter.
• B) When stimulated, their signaling pathway sends action potentials directly to the limbic system.
• C) They are unable to detect odorants without activation of taste buds.
• D) Only four different types of odorant receptor proteins are found in the plasma membrane of olfactory receptors.
• E) They are found in the floor of the nasal cavity and on the upper surface of the hard palate, which separates the mouth from the nose.

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