QUIZ-MUCOM46
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8️⃣ In conduction deafness:Anonymous voting
- The cochlea is destroyed.
- Sound transmission is impaired in the external or middle ear.
- Sound waves cannot be conducted into the cochlea by bone conduction.
- All of the above are true
7️⃣ For the cones In the retina, all the following are true except:Anonymous voting
- They are responsible for color vision.
- They are smaller in number than the rods.
- They are associated with higher visual acuity than the rods
- They are present only in the fovea centralis.
6️⃣ One of the reactions in the retinal rods directly caused by absorption of light energy is:Anonymous voting
- Decomposition of scotopsin.
- Transformation of vitamin A to retinal.
- Transformation of 1,1-cis retinal to all-trans retinal.
- Combination of scolopsin and 11-cis retinal.
5️⃣ When a person remains in darkness for a long time:Anonymous voting
- The sensitivity of the visual receptors to light increases
- Large amounts of rhodopsin dissociate into opsin and retinal
- Most of the retinal is converted into vitamin A.
- None of the above occurs.
4️⃣ During accommodation of the eye for near vision, all the following occur except:Anonymous voting
- Constriction of the pupils.
- Relaxation of the ciliary muscles
- Increase in the curvature of the lens.
- Convergence of the eyeballs.
3️⃣ Which of the following taste buds help protect against the ingestion of certain plant poisons?Anonymous voting
- Sweet teste buds
- Bitter teste buds
- Sour teste buds
- Sali teste buds
2️⃣ Why is a sudden loud sound more likely to damage, the cochlea than a loud sound that develops slowly?Anonymous voting
- The basilar fibers are sensitive to sudden sounds but adapt to slowly developing sounds.
- A sudden sound carries more energy.
- The tympanic membrane becomes flaccid as a sound becomes louder.
- There is a latent period before the attenuation reflex can occur.
- The fluid pressure in the scala tympani decreases as a sound becomes iouder.
1️⃣ What is the color of a monochromatic light that stimulates the red cones about twice as much as the green cones?Anonymous voting
- Green
- Red
- Yellow
- Orange
- White
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