In the human eyeball, the space between the lens and the retina is called:
1. canal of Schlemm, and is filled with aqueous humor.
2. anterior chamber, and is filled with vitreous humor.
3. aqueous chamber, and is filled with aqueous humor.
4. vitreous chamber, and is filled with vitreous humor.

Subtopic:  Human Eye (OLD NCERT) |
 80%
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Arrange the following events in correct chronological order of their occurrence regarding the recognition of an object seen by our eyes:
I.  Light induces dissociation of retinal from opsin.
II.  There is a change in the permeability of the membrane of photoreceptors.
III.  Potential differences are generated in the photoreceptor cells.
IV.  Action potential is generated in the ganglion cells through the bipolar cells.
V.  Optic nerve transmits impulse to visual cortex.
VI.  Neural impulses are analysed and the image formed on the retina is recognised based on earlier memory or experience.
 
1. I → III → II → IV → V → VI → VII
2. I → II → IV → III → V → VI → VII
3. I → II → III → IV → V → VI → VII
4. I → II → III → IV → V → VII → VI
Subtopic:  Human Eye (OLD NCERT) |
 63%
From NCERT
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Which ear ossicle articulates with a bone on its either side?
1. Malleus
2. Incus
3. Stapes
4. All of them
Subtopic:  Outer & Middle Ear (OLD NCERT) |
 57%
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In the inner ear:
Statement I: Scala media is filled with endolymph.
Statement II: Scala vestibuli ends at round window and scala tynpani ends at oval window.
1. Both Statement I and Statement II are correct
2.  Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct
Subtopic:  Inner Ear: Cochlea (OLD NCERT) |
 67%
From NCERT
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Consider the given statements:
Statement I: In a neuron, Nissl’s granules are not present in dendrites.
Statement II: Unmyelinated nerve fibre is not enclosed by a Schwann cell in the peripheral neural system.
Statement III: Myelinated neurons conduct impulse at a higher velocity when compared to unmyelinated neurons.
1. Only Statement I and Statement II are correct
2. Only Statement III is correct
3. Statement II and Statement III are incorrect
4. Statement I, Statement II and Statement III are correct
Subtopic:  Nervous System |
 71%
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How many of the given receptors in the box are helpful in detecting chemicals?
Olfactory receptors, Gustatory receptors, Photoreceptors, Mechanoreceptors
1. One
2. Two
3. Three
4. Four
Subtopic:  Smell & Taste (OLD NCERT) |
 72%
From NCERT
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Arrange the given layers in the order of their occurrence as the doctor cuts through the skull to reach the brain:
a. Pia mater
b. Dura mater
c. Arachnoid mater
1. b → a → c
2. b → c → a
3. a → b → c
4. c → a → b
Subtopic:  Nervous System | Neuroanatomy |
 86%
From NCERT
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Which of the following is not correct for the axonal membrane, when a neuron is not conducting any
impulse, i.e., resting?
1. Comparatively more permeable to K+ ions
2. Permeable to negatively charged proteins present in the axoplasm
3. Nearly impermeable to Na+ ions
4. Negatively charged on its inner surface
Subtopic:  Origin of Resting Membrane Potential | Action Potential |
 78%
From NCERT
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Inner parts of cerebral hemispheres and a group of associated deep structures like the amygdala, etc., form a complex structure which is concerned with:
(a) Olfaction
(b) Control of respiration
(c) Autonomic responses
(d) Expression of fear and rage
(e) Regulation of sexual behavior
(f) Gastric secretions
Select the correct option.
1. (a), (c), (d) and (e)
2. (d) and (e) only
3. (a), (b), (c) and (f)
4. (b), (c), (d) and (f)
Subtopic:  Diencephalon |
From NCERT
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The optic nerve leaves the eye at a particular point. Read the following about this point.
(a) Abundant photoreceptor cells present
(b) Point is slightly above the posterior pole of the eyeball
(c) Macula lutea is present lateral to this point.
(d) It is medial to the posterior pole of the eye ball.
Choose the option which has all the correct ones from above.
1. a, b only
2. b, c only
3. a, c, d only
4. b, c, d only
Subtopic:  Human Eye (OLD NCERT) | Basic Anatomy of Human Eye (OLD NCERT) |
 63%
From NCERT
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