Reissner's membrane is a thin membrane that separates the scala media from the:

1. oval window
2. scalavestibuli
3. scala tympani
4. round window

Subtopic:  Inner Ear: Cochlea (OLD NCERT) |
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The primary auditory area is located in:

1. medial geniculate body of thalamus
2. midbrain
3. temporal lobe
4. medulla oblongata

Subtopic:  Inner Ear: Cochlea (OLD NCERT) |
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The maculae are the sensory organs in the:

1. cochlear duct
2. saccule
3. semicircular canals
4. semicircular ducts

Subtopic:  Inner Ear: Vestibular Apparatus (OLD NCERT) |
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The process by which the vertebrate eye changes optical power to maintain a clear image or focus on an object as its distance varies is known as:

1. adaptation
2. accommodation
3. amblyopia
4. visual acquity

Subtopic:  Huma Eye: Accommodation (OLD NCERT) |
 80%

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The pigment that gets oxidized/bleached/decomposed when exposed to light is:
1. retinol
2. retinoyl ester
3. rhodopsin
4. iodopsin

Subtopic:  Basic Anatomy of Human Eye (OLD NCERT) |
 66%

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Receptor sites for neurotransmitters are present on
1.membranes of synaptic vesicles
2. pre-synaptic membrane
3. tips of axons
4. post-synaptic membrane

Subtopic:  Action Potential | Synapse |
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Good vision depends on adequate intake of carotene rich food.
Select the best option from the following statements:
I. Vitamin-A derivatives are formed from carotene.
I. The photo pigments are embedded in the membrane discs of the inner segment.
III. Retinal is a derivative of vitamin-A.
IV. Retinal is a light absorbing part of all the visual photo pigments.
1. (I) and (II)
2. (I), (III) and (IV)
3. (I) and (III)
4. (II), (III) and (IV)

Subtopic:  Human Eye: Adaptation (OLD NCERT) |
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Myelin sheath is produced by
1. Schwann cells and Oligodendrocytes
2. Astrocytes and Schwann cells
3. Oligodendrocytes and Osteoclasts
4. Osteoclasts and Astrocytes

Subtopic:  Nervous System |
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Choose the correct statement:
1. Nociceptors respond to changes in pressure
2. Meissner’s corpuscles are thermoreceptors
3. Photoreceptors in the human eye are depolarised during darkness and become hyperpolarised in response to the stimulus
4. Receptors do not produce graded potentials

Subtopic:  Basic Anatomy of Human Eye: 1 (OLD NCERT) |
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Photosensitive compound in human eye is made up of
1. Opsin and Retinal
2. Opsin and Retinol
3. Transducin and Retinene
4. Guanosine and Retinol

Subtopic:  Human Eye (OLD NCERT) |
 81%
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