The auditory tube [also called as the Eustachian tube] functions in equalizing pressure between the middle ear and:
1. throat | 2. inner ear |
3. outer ear | 4. cochlea |
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When one enters a dark room from a bright area:
1. retinol is converted to rhodopsin and eye sensitivity is decreased
2. rhodopsin is converted to retinol and eye sensitivity is decreased
3. rhodopsin is converted to retinol and eye sensitivity is increased
4. retinol is converted to rhodopsin and eye sensitivity is increased
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The amount of light entering the human eye is regulated by:
1. Pupil | 2. Iris |
3. Cornea | 4. Ciliary body |
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The tympanic membrane:
1. is covered on both sides by skin
2. is covered on both sides by mucus membrane
3. is covered with skin on the outside and by mucus membrane on the inside
4. is covered with skin on the inside and by mucus membrane on the outside
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The auditory receptors in the human ear will be:
1. Organ of Corti | 2. Hair cells |
3. Macula | 4. Cupula |
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The olfactory bulb can be regarded as the extension of:
1. Brain stem | 2. Limbic system |
3. Diencephalon | 4. Corpora quadrigemina |
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Photopigments in the human eye are composed of:
1. a lipid and an ester of vitamin A
2. a protein and an ester of vitamin A
3. a lipid and an aldehyde of vitamin A
4. a protein and an aldehyde of vitamin A
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Identify the correct statement regarding the sections of the spinal cord shown in the given diagram:
I. A and D are part of the grey mater
II. B is motor and C is sensory
1. Only I | 2. Only II |
3. Both I and II | 4. Neither I nor II |
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Above the rows of hair cells of Organ of Corti, there is a thin elastic membrane called:
1. Reissner’s membrane | 2. Basilar membrane |
3. Tectorial membrane | 4. Tympanic membrane |
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Which layer of the human eyeball forms the ciliary body?
1. Sclera | 2. Choroid |
3. Retina | 4. Cornea |
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