Which of the following statements pertains to olfactory receptors?
A)They are specialized endings of efferent neurons in separate cells.
B)When stimulated, they send impulses to both the limbic system for coordination between smell and behaviour, and to the thalamus and cortex for perception of smell.
C) They synapse in the thalamus.
D) A substance must be fat soluble in order to be smelled.

Question

Quizplus · Accepted Answer

Olfactory receptors are specialized nerve endings that detect and respond to different odor molecules. When stimulated, they send impulses to both the limbic system for coordination between smell and behaviour, and to the thalamus and cortex for perception of smell. Choice A is incorrect as olfactory receptors are not efferent neurons but sensory neurons. Choice C is incorrect as olfactory receptors do not synapse in the thalamus; rather, their axons form the olfactory nerve that directly projects to the olfactory bulb. Choice D is incorrect as not all substances that are smelled are fat soluble.

Which of the Following Statements Pertains to Olfactory Receptors