smell
The sense of smell, or olfaction, is the special sense through which smells (or odors) are perceived. The sense of smell has many functions, including detecting desirable foods, hazards, and pheromones, and plays a role in taste.
In humans, it occurs when an odor binds to a receptor within the nasal cavity, transmitting a signal through the olfactory system. Glomeruli aggregate signals from these receptors and transmit them to the olfactory bulb, where the sensory input will start to interact with parts of the brain responsible for smell identification, memory, and emotion.There are many different causes for alteration, lack, or disturbance to a normal sense of smell, and can include damage to the nose or smell receptors, or central problems affecting the brain. Some causes include upper respiratory infections, traumatic brain injury, and neurodegenerative disease.
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In humans, it occurs when an odor binds to a receptor within the nasal cavity, transmitting a signal through the olfactory system. Glomeruli aggregate signals from these receptors and transmit them to the olfactory bulb, where the sensory input will start to interact with parts of the brain responsible for smell identification, memory, and emotion.There are many different causes for alteration, lack, or disturbance to a normal sense of smell, and can include damage to the nose or smell receptors, or central problems affecting the brain. Some causes include upper respiratory infections, traumatic brain injury, and neurodegenerative disease.
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Image that you can smell
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Image that you can smell
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Trivia Dolphins have actual names
Dolphins have actual names Early in life, a dolphin creates a unique vocal whistle that allows it to be identified by other dolphins in its pod. A team of researchers at the University of St. Andrews in Scotland found that the animals responded when their specific call was played back to them...- Beatriz9
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Trivia Yes, you can smell rain
Yes, you can smell rain Weather patterns produce distinct smells, and one of these is a lightly pungent scent of ozone that springs from fertilizers and can be carried in a thunderstorm's downdrafts from higher altitudes, alerting those with sensitive noses that the rain is about to fall. (S)...