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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Cornea transplant in humans is almost never rejected. This is because

1. its cells are least penetrable by bacteria

2. it has no blood supply

3. it is composed of enucleated cells

4. it is a non-living layer

Subtopic:  Basic Anatomy of Human Eye: 1 (OLD NCERT) | Basic Anatomy of Human Eye (OLD NCERT) |
 89%
NEET - 2008
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Which one of the following is an example of negative feedback loop in humans

1. Constriction of skin blood vessels and contraction of skeletal muscles when it is too

cold

2. Secretion of tears after falling of sand particles into the eye

3. Salivation of mouth at the sight of delicious food

4. Secretion of sweat glands and constriction of skin blood vessels when it is too hot

Subtopic:  Autonomic Nervous System: 2 (OLD NCERT) | Autonomic Nervous System (OLD NCERT) |
 50%
NEET - 2007
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Bowman's glands are located in the:

1. proximal end of uriniferous tubules

2. anterior pitutary

3. female reproductive system of cockroach

4. olfactory epithelium of our nose

Subtopic:  Nervous System |
 54%
NEET - 2007
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Which one of the following pairs of structures distinguishes a nerve cell from other types of cell ?

(1) Perikaryon and dendrites

(2) Vacuoles and fibres

(3) Flagellum and medullary sheath

(4) Nucleus and mitochondria

Subtopic:  Nervous System |
 81%
NEET - 2007
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Which one of the following statements is correct?
1. Neurons regulate endocrine activity, but not vice versa
2. Endocrine glands regulate neural activity and nervous system regulates endocrine glands
3. Neither hormones control neural activity nor the neurons control endocrine activity
4. Endocrine glands regulate neural activity, but not vice versa

 

Subtopic:  Nervous System |
 60%
NEET - 2006
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Bowman's glands are found in :

1. olfactory epithelium 

2. external auditory canal 

3. cortical nephrons only 

4. juxtamedullary nephrons 

Subtopic:  Smell & Taste (OLD NCERT) |
 89%
NEET - 2006
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