Which of the following destroys the acetylcholinesterase?
1.  Malathion
2.  CO
3.  KCN
4.  Colchicine

Subtopic:  Synapse |
AIPMT - 1998
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Botulism affects:
1.  Digestive system
2.  Blood vascular system
3.  Nervous system
4.  Respiratory system

Subtopic:  Nervous System |
 77%
AIPMT - 1998
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Which of the following is an effect of anaesthetics on the body?
1.  Inhibits Na–K pump
2.  Kills nerves
3.  Stops brain functions
4.  Inactivates skin cells

Subtopic:  Action Potential |
 67%
AIPMT - 1998
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Deficiency of oxygen affects which organ the most:
1.  Brain
2.  Skin
3.  Kidney
4.  Intestine

Subtopic:  Nervous System |
 94%
AIPMT - 1999
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The simplest reflex action in humans is:
1.  Mono synaptic
2.  Bi-synaptic
3.  Tri-synaptic
4.  Poly-synaptic

Subtopic:  Motor Functions of Spinal Cord |
 72%
AIPMT - 1999
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Depolarization of axolemma during nerve conduction takes place because of:
 

1. Equal amount of Na+ & K+ moves out across axolemma
2. Na+ ions move inside
3. More Na+ ions are outside
4. None of the above
Subtopic:  Action Potential |
 80%
From NCERT
AIPMT - 2000
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Which of the following statement is correct for the node of Ranvier of nerve:

1. Neurilemma is discontinuous

2. Myelin sheath is discontinuous

3. Both neurilemma & Myelin sheath are discontinuous

4. Covered by myelin sheath

Subtopic:  Nervous System |
 78%
From NCERT
AIPMT - 2002
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What used to be described as Nissel granules in a nerve cell are now identified as:

1. Cell metabolites

2. Fat granules

3. Ribosomes

4. Mitochondria

Subtopic:  Nervous System |
 80%
AIPMT - 2003
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In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive:

1. K+ and Na+ out of the cell

2. Na+ into the cell

3. Na+ out of the cell

4. K+ into the cell 

Subtopic:  Origin of Resting Membrane Potential |
 62%
From NCERT
AIPMT - 2004
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Four healthy people in their twenties got involved in injuries resulting in damage and death of a few cell of the following. Which of the cells are least likely to be replaced by new cells:

1. Osteocytes

2. Liver cells

3. Neurons

4. Malpighian layer of the skin 

Subtopic:  Nervous System |
 81%
AIPMT - 2005
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