Which statement concerning olfactory receptors is correct?
A) They are specialized endings of efferent neuronsin separate cells.
B) when stimulated, they send impulses both to the limbic system for coordination between smell and behaviour, and to the thalamus and cortex for perception of smell.
C) synapse in the thalamus .
D) a substance must be fat soluble in order to be smelled.

Question

Quizplus · Accepted Answer

Olfactory receptors send impulses both to the limbic system for coordination between smell and behavior, and to the thalamus and cortex for perception of smell.

Answer: D 
 This statement is incorrect as a substance does not need to be fat soluble in order to be smelled. Smell receptors are capable of detecting a wide range of molecules, including both water-soluble and fat-soluble compounds.

Which Statement Concerning Olfactory Receptors Is Correct