Parts A, B, C and D of the human eyes are shown in the diagram. Select the option

which gives correct identification along with its functions/characteristics

1. A-retina-contains photoreceptors-rods and cones

2. B-blind spot-has only a few rods and cones

3. C-aqueous chamber-reflects the light which does not pass through the lens

4. D-choroidits anterior part forms ciliary body

Subtopic:  Basic Anatomy of Human Eye: 1 (OLD NCERT) | Basic Anatomy of Human Eye (OLD NCERT) |
 70%
From NCERT
NEET - 2013
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Which part of the human ear plays no role in hearing as such but is otherwise very much

required?

1. Eustachian tube

2. Organ of Corti

3. Vestibular apparatus

4. Ear ossicles

Subtopic:  Inner Ear: Vestibular Apparatus (OLD NCERT) |
 59%
From NCERT
NEET - 2012
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The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of

the human eyes is a derivative of

1. vitamin-C

2. vitamin-D

3. vitamin-A

4. vitamin-B

Subtopic:  Human Eye: Adaptation (OLD NCERT) |
 94%
From NCERT
NEET - 2011
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When a neuron is an resting state, ie, not conducting any impulse, the axonal membrane

is

1. equally permeable to both Na+ and K+ ions

2. impermeable to both Na+ and K+ ions

3. comparatively more permeable to K+ ions and nearly impermeable to Na+ ions

4. comparatively more permeable to Na+ ions and nearly impermeable to K+ ions

Subtopic:  Origin of Resting Membrane Potential |
 85%
From NCERT
NEET - 2011
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The nerve centres which control the body temperature and the urge for eating are

contained in 

1. hypothalamus 

2. pons

3. cerebellum 

4. thalamus 

Subtopic:  Diencephalon |
 93%
From NCERT
NEET - 2010
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Alzheimer disease in humans is associated with the deficiency of

1. dopamine

2. glutamic acid

3. acetylcholine

4. Gamma Amino Butyric Acid (GABA)

Subtopic:  Synapse |
 54%
NEET - 2009
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The kind of tissue that forms the supportive structure in our pinna (external ears) is also

found in

1. vertebrae

2. nails

3. ear ossicles

4. tip of the nose

Subtopic:  Outer & Middle Ear (OLD NCERT) |
 74%
NEET - 2009
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Given below is a diagrammatic cross section of a single loop of human cochlea.

Which one of the following options correctly. represents the names of three different

parts?

1. B : Tectorial membrane
    C: Perilymph
    D : Secretory cells

2. C: Endolymph
    D : Sensory hair celis
    A: Serum

3. D: Sensory hair cells
    A: Endolymph
    B: Tectorial membrane

4. A : Perilymph
    B: Tectorial membrane
    C: Endolymph

Subtopic:  Inner Ear: Cochlea (OLD NCERT) |
 69%
From NCERT
NEET - 2008
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Which one of the following is the correct difference between rod cells and cone cells of our retina? 

 

          Features

        Rod Cells 

          Cone Cells

1.

Visual acuity 

High

Low

2.

Visual pigment contained 

Iodopsin

Rhodopsin

3.

Overall function

Vision in poor light

Colour vision and detailed vision in bright light

4.

Distribution  

More concentrated in the centre of the retina 

Evenly distributed all over the retina

     

Subtopic:  Human Eye: Adaptation (OLD NCERT) |
 80%
From NCERT
NEET - 2008
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During the propagation of a nerve impulse, the action potential results from the movement of

1. K+ ions from extracelular fluid to intracellular fluid

2. Na+ ions from intracellular fluid to extracellular fluid

3. K+ ions from intracellular fluid to extracellular fluid

4. Na+ ions from extracellular fluid to intracellular fluid

Subtopic:  Origin of Resting Membrane Potential | Action Potential |
 69%
From NCERT
NEET - 2008
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