The release of chemical messenger from synaptic vesicles is under the influence of these ion(s)
(1) CI-

(2) Fe++ and S++

(3) Ca++

(4) Mg++ and Sr++

Subtopic:  Synapse |
 85%
AIIMS - 2012
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which of the following is true for the function of labelled parts in the diagram below?


(1) A - Blind spot  -   Image is formed here 

(2) B - Fovea       - No visual activity is present

(3) C - Cornea      - Helps to hold lens in place

(4) D - Iris          - Visible coloured portion of eye

Subtopic:  Basic Anatomy of Human Eye: 1 (OLD NCERT) | Basic Anatomy of Human Eye (OLD NCERT) |
 84%
From NCERT
AIIMS - 2013
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

Given is the diagrammatic representation of the sectional view of cochlea. Select the correct option regarding it.

(a) A - Organ of corti-responsible for maintenance of balance of the body and posture.
(b) B - Scala vestibuli-filled with endolymph that ends at the round window.
(c) C - Scala tympani- terminates at the round window which opens to the middle ear.
(d) D - Basilar membrane nerve impulses are generated against it.

Subtopic:  Inner Ear: Cochlea (OLD NCERT) |
 57%
From NCERT
AIIMS - 2014
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

A small rise in the body temperature of humans is corrected by

(i) sweating
(ii) dilating the skin arteries
(iii) constricting the skin arteries
(iv) increased tension of muscles in the skin.

(1) (i) only

(2) (ii) only

(3) (i) and (ii)

(4) (iii) and (iv)

Subtopic:  Diencephalon |
 55%
AIIMS - 2015
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NEET 2023 - Target Batch - Aryan Raj Singh
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Pacinian corpuscles occur in the skin of certain parts of body in mammals. These are

(1) type of glands

(2) pain receptors

(3) naked tactile receptors

(4) encapsulated pressure receptors.

 

Subtopic:  Nervous System |
AIIMS - 2017
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NEET 2023 - Target Batch - Aryan Raj Singh
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The cavity of diencephalon is known as 
(1) first ventricle

(2) second ventricle

(3) third ventricle

(4) fourth ventricle

Subtopic:  Diencephalon |
 54%
AIIMS - 2017
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Which one is an incorrect match?
(1) Glucoma-Abnormal high pressure on liquid of eye

(2) Eustachian tube-Connects middle ear cavity with pharynx

(3) Caloreceptor-Heat

(4) Interoreceptor-Touch

Subtopic:  Nervous System | Outer & Middle Ear (OLD NCERT) |
AIIMS - 2017
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NEET 2023 - Target Batch - Aryan Raj Singh
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The cranial nerves which originate from the medulla oblongata are
(1) IX, X, XI and XII

(2) III, VIl and IX

(3) VII, VII IX and X

(4) VIlI, IX, X, XI and XII

AIIMS - 2016
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NEET 2023 - Target Batch - Aryan Raj Singh
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Node of Ranvier occurs where
(1) nerve is covered with myelin sheath

(2) neurolemma is discontinuous

(3) neurolemma and myelin sheath are discontinuous

(4) myelin sheath is discontinuous

Subtopic:  Nervous System |
 72%
From NCERT
AIIMS - 2015
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

The brain disease caused due to accumulation of amyloid β-peptide is 
(1) Addison's disease

(2) Huntington's disease

(3) Parkinson's disease

(4) Alzheimer's disease

Subtopic:  Nervous System |
AIIMS - 2014
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NEET 2023 - Target Batch - Aryan Raj Singh
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