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7.3 Smell&Taste
| Term | Definition |
|---|---|
| antihistamines | medications that work to curb the activity of histamines |
| gustatory cells | sensory receptors within a taste bud |
| gustatory hairs | threads that emerge from the gustatory cells |
| histamines | molecules that trigger a reaction to irritation of the nasal membranes, which produces nasal congestion and drainage |
| mucous layer | a viscous coating that surrounds the olfactory hairs |
| odor molecules | tiny airborne particles from food that trigger the sense of smell |
| olfactory bulb | the thickened end of the olfactory nerve that sends sensory impulses to the olfactory region of the brain |
| olfactory filaments | fibers in the olfactory nerve that receive impulses from olfactory receptor cells |
| olfactory hairs | threads that extend from the olfactory receptor cells into the nasal cavity |
| olfactory nerve | sensory pathway from the nasal cavity to the olfactory cortex of the brain |
| olfactory receptor cells | the sensors responsible for smell |
| olfactory region | a dime sized area at the top of each nasal cavity that houses sensors responsible for smell |
| papillae | tiny bumps on the tongue that house taste buds |
| septum | the structure made of cartilage that divides the left and right air passages in the nose |
| tastants | compounds that stimulate the gustatory hairs to send nerve impulses to the brain |
| taste buds | sensory receptors for taste |
| taste pores | very small openings in the top of the taste buds through which gustatory hairs project |