Which of the following correctly explains how chemical molecules in the air trigger a nerve impulse to the brain for the
sense of smell.
Select one:
a.
The chemicals are broken down by fluids in the nose, and those component parts are absorbed by the cell to trigger a nerve
impulse.
b.
The chemicals βblow byβ the cilia of the dendrites as they are breathed in, causing them to bend and trigger a nerve impulse.
c.
The chemicals dissolve in fluid surrounding cilia extending from the dendrites of olfactory receptors and bind to the cells
triggering a nerve impulse.
d.
The chemicals are absorbed by olfactory receptors in the lining of the nose and move into the cell to trigger a nerve
impulse.
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Which of the following correctly explains how chemical molecules in the air trigger a nerve impulse...
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