During the transmission of nerve impulses through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge?

1. First negative, then positive, and again back to negative
2. First positive, then negative, and continue to be negative
3. First negative, then positive, and then continues to be positive
4. First positive, then negative, and again back to positive

Subtopic:  Origin of Resting Membrane Potential |
 76%
From NCERT
AIPMT - 2007
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

In the following diagram showing axon terminal and synapse A, B, C, D and E respectively represents:
1. A-axon terminal, B-synaptic cleft, G-synaptic vesicles, D-neurotransmitters, E-receptors
2. A-axon terminal, B-synaptic vesicles, C-synaptic cleft, D-receptors, E-neurotransmitters
3. A-synaptic cleft, B-synaptic vesicles, C-axon terminal, D-neurotransmitters, E-receptors
4. A-synaptic cleft, B-axon terminal, C-synaptic vesicles, D-neurotransmitters, E-receptors

Subtopic:  Action Potential | Synapse |
 88%
From NCERT
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In the central nervous system, myelinated fibres form the............., while the non-myelinated fibre cells form the.................... .

1. Grey matter, white matter

2. White matter, grey matter

3. Ependymal cells, neurosecretory cells

4. Neurosecretory cells, ependymal cells

 57%
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Which cranial nerve has the highest number of branches?

1. Facial nerve

2. Trigeminal

3. Vagus nerve

4. None of these

Subtopic:  Nervous System |
 60%
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The junction between the axon of one neuron and the dendrite of the next is called:

1. junction point

2. a synapse

3. a joint

4. constant bridge

Subtopic:  Nervous System |
 91%
From NCERT
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Vertebrate brain differentiates from:

1. endoderm

2. mesoderm

3. ectoderm

4. blastoderm

Subtopic:  Basic Anatomy of Human Eye (OLD NCERT) |
 53%
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Which of the following statements is correct?

1. Cornea consists of dense matrix of collagen and is the most sensitive portion of the eye.
2. Cornea is an external, transparent and protective proteinaceous ring of the eyeball
3. Cornea consists of dense connective tissue of elastin and can repair itself
4. The Cornea is convex, transparent layer which is highly vascularised
Subtopic:  Basic Anatomy of Human Eye: 1 (OLD NCERT) | Basic Anatomy of Human Eye: 2 (OLD NCERT) | Basic Anatomy of Human Eye (OLD NCERT) |
NEET - 2019
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NEET 2023 - Target Batch - Aryan Raj Singh
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Assertion: Neural signals through the parasympathetic nerves can increase the cardiac output.

Reason: Parasympathetic neurons stimulation can increase the activities of SA node and strength
             of ventricular contraction.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Autonomic Nervous System: 1 (OLD NCERT) | Autonomic Nervous System: 2 (OLD NCERT) | Autonomic Nervous System (OLD NCERT) |
 65%
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Assertion: Ear is a stato Acoustic organ.

Reason: Ear is related to hearing & balance.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Outer & Middle Ear (OLD NCERT) |
 81%
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NEET 2023 - Target Batch - Aryan Raj Singh
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An action potential for a given axon is:
1. different in size each time it occurs
2. always the same size
3. larger when the information is to be carried faster
4. smaller when information goes to a gland rather than a muscle

Subtopic:  Action Potential |
 63%
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