Odorant molecules bind to:
A)olfactory bulbs.
B)ORNs.
C)the olfactory epithelium.
D)the glomerulus.

Question

Quizplus · Accepted Answer

Odorant molecules bind to odorant receptors located on the cilia of olfactory receptor neurons (ORNs) in the olfactory epithelium, which send signals to the olfactory bulbs in the brain. Therefore, choice B is the correct answer. A and C are both related to the olfactory system but do not reflect the direct site of odorant molecule binding. D refers to the structure in the glomerular layer of the olfactory bulb, which receives input from ORNs and processes olfactory information, but it is not the site of odorant binding.

Odorant Molecules Bind To