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Olfactory cells and taste buds are normally stimulated by:?
1. movement of a cupula
2. the movement of otoliths
3. stretching of the receptor cells
4. substances in solution

I think I have it narrowed down to 3 or 4, can someone help? Thanks.

2007-03-23 07:47:39 · 5 answers · asked by cassandra 2 in Science & Mathematics Biology

5 answers

3 is the answer

The olfactory receptor cells are actually neurons, or nerve cells, outfitted at their knobby ends with six to twelve hair-like cilia. The cilia dangle into the thin layer of mucus that coats the membrane and snag passing particles for smell analysis.

Each receptor cell is connected by a single primary olfactory neuron to one of the brain's two olfactory bulbs. The primary olfactory neurons pass through holes in the cribriform plate, a penny-thin bone at the front of the cranial cavity upon which the olfactory bulb rests. The primary neurons come together in structures known as glomeruli and there meet secondary neurons.

2007-03-23 08:15:26 · answer #1 · answered by Anonymous · 0 0

I agree that olfactory cells are neurons and have receptors, but I don't agree that stretch has anything to do with stimulating them. They are stimulated by receptor ligand interaction. And the ligand must be dissolved in fluid. Same with taste buds.

2007-03-23 16:34:40 · answer #2 · answered by misoma5 7 · 0 0

the quote below implies that the answer would be substances in solution, since the odorants must be dissolved in the serous lining of the olfactory cells...

4.

"The cell membrane covering the surface of the cilia contains olfactory receptors which respond to odour-producing substances, odorants, dissolved in the serous covering the epithelium. "

2007-03-23 16:32:46 · answer #3 · answered by Sue O 2 · 0 0

4. Substances in solution.
Both of these are chemoreceptors. The sensed chemicals bind to cell-surface proteins on the chemoreceptor cells. This implies that they must be dissolved in the fluid which keeps these cells from being desiccated.

2007-03-23 16:12:07 · answer #4 · answered by Anonymous · 2 0

probably 4

2007-03-23 15:09:25 · answer #5 · answered by setonrunner405 2 · 1 0

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