Olfaction

Question 1

The first-order neurons of the olfactory pathway.

Answer 1

Olfactory receptors

Question 2

3 principal kinds of cells of the nasal epithelium

Answer 2

1. Supporting cells (Sustentacular cells)
2. Olfactory cells (bipolar neurons)
3. Basal cells

Question 3

These are columnar, epithelial cells of the mucous membrane lining the nose. They provide physical support, nourishment, and electrical insulation for the olfactory receptor cells and help detoxify chemicals that come in contact with the olfactory epithelium.

Answer 3

Supporting cells (Sustentacular cells)

Question 4

Bipolar neuros whose cell bodies lie in between the supporting cells with dendrites reaching the mucosal surface.

Answer 4

Olfactory cells

Question 5

Site of olfactory transduction (receptors). They react to odors and then stimulate the olfactory cells, thus initiating olfactory impulse.

Answer 5

Olfactory hairs

Question 6

Are stem cells located between the bases of the supporting cells. They continually undergo cell division to produce new olfactory receptor cells, which live for only a month or so before being replaced.

Answer 6

Basal cells

Question 7

Produce mucus that is carried to the surface of the epithelium by ducts.

Answer 7

Olfactory (Bowman’s) Glands