Olfactory receptor cells differ from most other neural cells in that they
A)die and are replaced frequently.
B)replicate by mitosis.
C)have no dendrites.
D)use gaseous neurotransmitters exclusively.

Question

Olfactory receptor cells differ from most other neural cells in that they​ 
A)die and are replaced frequently. 
B)replicate by mitosis. 
C)have no dendrites. 
D)use gaseous neurotransmitters exclusively.

Quizplus · Accepted Answer

Olfactory receptor cells are constantly exposed to the external environment and are frequently damaged, so they have a short lifespan and are constantly being replaced by new cells generated from basal cells in the olfactory epithelium. This process is called neurogenesis, and it helps to maintain the function of the olfactory system even in the face of ongoing exposure to potentially damaging stimuli. Unlike other neural cells, olfactory receptor cells are not capable of mitosis on their own and must be replaced by new cells. Therefore, option A is the most accurate choice.

Olfactory Receptor Cells Differ from Most Other Neural Cells in That