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Why do chemicals detected by our sensory systems need to be volatile?
so they can vaporize reach the nose and dissolve in the mucus
What happens when you put food in your mouth?
odor molecules from the food travel in the passage between your nose and mouth to olfactory receptor cells
What happens if the mucus in your nasal passages becomes to thick?
Air and odor molecules cannot reach your olfactory receptor cells.
What is a result of the mucus in your nasal passages becoming to thick?
the brain receives one signal identifying the odor and everything you eat tastes the same
What is another result of the mucus in your nasal passages becoming to thick?
you can feel the temperature and texture of the food but the brain doesnt recognize what it is
What are cilia?
hairlike receptors that extend from cells inside the nose, are covered with thin clear mucus that dissolves odor molecules not already in vapor form.
What does the inner ear help the body do?
helps it cope with changes in position, acceleration, and deceleration and not hearing
at right angles to each other allowing each one to be oriented to one of the three planes of space
Why are hearing and equilibrium in the same section?
because both sensations are received in the inner ear
What is Conduction deafness?
decreased ability to conduct the energy of sound waves
can be caused by ear wax buildup
What is sensorineural deafness?
caused by damage to hearing receptors, cochlear branch, or damage to the vestibulocochlear nerve
What do the extrinsic eye muscles do?
produce gross eye movement that allow the eye to follow a moving object
Why does astigmatism occur?
the cornea is not curved in uniform as a result part of the image is unfocused in the retina
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