340527
Identify the correct statement which describes after events of depolarisation. i. The rise in the stimulus-induced permeability to \(\mathrm{Na}^{+}\)is extremely shortlived. ii. It is quickly followed by a rise in impermeability to \(\mathrm{K}^{+}\).
1 i is correct
2 ii is correct
3 Both are correct
4 Both are incorrect
Explanation:
After events of depolarisation is the rise in the stimulus-induced permeability to \(\mathrm{Na}^{+}\) is extremely shortlived. It is quickly followed by a rise in permeability to \(\mathrm{K}^{+}\).
BIOXI21: NEURAL CONTROL AND COORDINATION
340528
The electrical potential difference across the polarised plasma membrane during polarisation, is known as
1 Potential deficit
2 Resting potential
3 Action potential
4 All of these
Explanation:
The electrical potential difference across the resting plasma membrane is called as the resting potential.
BIOXI21: NEURAL CONTROL AND COORDINATION
340529
During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric change?
1 First positive, then negative and continue to be negative
2 First negative, then positive and continue to be positive
3 First positive, then negative and again back to positive
4 First negative, then positive and again back to negative
Explanation:
During depolarisation, the charge within the cell rapidly shifts from negative to positive. For this rapid change to take place within the interior of the cell, several events must occur along the plasma membrane of the cell as well. While the sodium potassium pump continues to work, the voltage gated ion channels that had been closed while the cell was at resting potential have been opened by an electrical stimulus. As the sodium rushes back into the cell the positive sodium ions raise the charge inside the cell from negative to positive. Once the interior of the cell becomes positively charged, depolarisation of the cell is complete.
AIPMT - 2007
BIOXI21: NEURAL CONTROL AND COORDINATION
340530
A wave of action potential travelling through the neuron is called as
1 Resting impulse
2 Nerve impulse
3 Motor impulse
4 Repolarisation
Explanation:
A wave of action potential travelling through the neuron is called as nerve impulse.
BIOXI21: NEURAL CONTROL AND COORDINATION
340531
Assertion : Acetylcholine transmits the nerve impulse across a synapse Reason : Acetylcholine is secreted by adrenergic neurons
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Acetylcholine is a neurotransmitter released from nerve endings (terminals) in both the peripheral and the central nervous systems. It is synthesised within the nerve terminal from choline. Most neuromuscular junctions use the neurotransmitter, acetylcholine, which is broken down by the enzyme acetylcholinesterase. Hence, the given Assertion is true but the Reason is false.
340527
Identify the correct statement which describes after events of depolarisation. i. The rise in the stimulus-induced permeability to \(\mathrm{Na}^{+}\)is extremely shortlived. ii. It is quickly followed by a rise in impermeability to \(\mathrm{K}^{+}\).
1 i is correct
2 ii is correct
3 Both are correct
4 Both are incorrect
Explanation:
After events of depolarisation is the rise in the stimulus-induced permeability to \(\mathrm{Na}^{+}\) is extremely shortlived. It is quickly followed by a rise in permeability to \(\mathrm{K}^{+}\).
BIOXI21: NEURAL CONTROL AND COORDINATION
340528
The electrical potential difference across the polarised plasma membrane during polarisation, is known as
1 Potential deficit
2 Resting potential
3 Action potential
4 All of these
Explanation:
The electrical potential difference across the resting plasma membrane is called as the resting potential.
BIOXI21: NEURAL CONTROL AND COORDINATION
340529
During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric change?
1 First positive, then negative and continue to be negative
2 First negative, then positive and continue to be positive
3 First positive, then negative and again back to positive
4 First negative, then positive and again back to negative
Explanation:
During depolarisation, the charge within the cell rapidly shifts from negative to positive. For this rapid change to take place within the interior of the cell, several events must occur along the plasma membrane of the cell as well. While the sodium potassium pump continues to work, the voltage gated ion channels that had been closed while the cell was at resting potential have been opened by an electrical stimulus. As the sodium rushes back into the cell the positive sodium ions raise the charge inside the cell from negative to positive. Once the interior of the cell becomes positively charged, depolarisation of the cell is complete.
AIPMT - 2007
BIOXI21: NEURAL CONTROL AND COORDINATION
340530
A wave of action potential travelling through the neuron is called as
1 Resting impulse
2 Nerve impulse
3 Motor impulse
4 Repolarisation
Explanation:
A wave of action potential travelling through the neuron is called as nerve impulse.
BIOXI21: NEURAL CONTROL AND COORDINATION
340531
Assertion : Acetylcholine transmits the nerve impulse across a synapse Reason : Acetylcholine is secreted by adrenergic neurons
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Acetylcholine is a neurotransmitter released from nerve endings (terminals) in both the peripheral and the central nervous systems. It is synthesised within the nerve terminal from choline. Most neuromuscular junctions use the neurotransmitter, acetylcholine, which is broken down by the enzyme acetylcholinesterase. Hence, the given Assertion is true but the Reason is false.
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BIOXI21: NEURAL CONTROL AND COORDINATION
340527
Identify the correct statement which describes after events of depolarisation. i. The rise in the stimulus-induced permeability to \(\mathrm{Na}^{+}\)is extremely shortlived. ii. It is quickly followed by a rise in impermeability to \(\mathrm{K}^{+}\).
1 i is correct
2 ii is correct
3 Both are correct
4 Both are incorrect
Explanation:
After events of depolarisation is the rise in the stimulus-induced permeability to \(\mathrm{Na}^{+}\) is extremely shortlived. It is quickly followed by a rise in permeability to \(\mathrm{K}^{+}\).
BIOXI21: NEURAL CONTROL AND COORDINATION
340528
The electrical potential difference across the polarised plasma membrane during polarisation, is known as
1 Potential deficit
2 Resting potential
3 Action potential
4 All of these
Explanation:
The electrical potential difference across the resting plasma membrane is called as the resting potential.
BIOXI21: NEURAL CONTROL AND COORDINATION
340529
During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric change?
1 First positive, then negative and continue to be negative
2 First negative, then positive and continue to be positive
3 First positive, then negative and again back to positive
4 First negative, then positive and again back to negative
Explanation:
During depolarisation, the charge within the cell rapidly shifts from negative to positive. For this rapid change to take place within the interior of the cell, several events must occur along the plasma membrane of the cell as well. While the sodium potassium pump continues to work, the voltage gated ion channels that had been closed while the cell was at resting potential have been opened by an electrical stimulus. As the sodium rushes back into the cell the positive sodium ions raise the charge inside the cell from negative to positive. Once the interior of the cell becomes positively charged, depolarisation of the cell is complete.
AIPMT - 2007
BIOXI21: NEURAL CONTROL AND COORDINATION
340530
A wave of action potential travelling through the neuron is called as
1 Resting impulse
2 Nerve impulse
3 Motor impulse
4 Repolarisation
Explanation:
A wave of action potential travelling through the neuron is called as nerve impulse.
BIOXI21: NEURAL CONTROL AND COORDINATION
340531
Assertion : Acetylcholine transmits the nerve impulse across a synapse Reason : Acetylcholine is secreted by adrenergic neurons
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Acetylcholine is a neurotransmitter released from nerve endings (terminals) in both the peripheral and the central nervous systems. It is synthesised within the nerve terminal from choline. Most neuromuscular junctions use the neurotransmitter, acetylcholine, which is broken down by the enzyme acetylcholinesterase. Hence, the given Assertion is true but the Reason is false.
340527
Identify the correct statement which describes after events of depolarisation. i. The rise in the stimulus-induced permeability to \(\mathrm{Na}^{+}\)is extremely shortlived. ii. It is quickly followed by a rise in impermeability to \(\mathrm{K}^{+}\).
1 i is correct
2 ii is correct
3 Both are correct
4 Both are incorrect
Explanation:
After events of depolarisation is the rise in the stimulus-induced permeability to \(\mathrm{Na}^{+}\) is extremely shortlived. It is quickly followed by a rise in permeability to \(\mathrm{K}^{+}\).
BIOXI21: NEURAL CONTROL AND COORDINATION
340528
The electrical potential difference across the polarised plasma membrane during polarisation, is known as
1 Potential deficit
2 Resting potential
3 Action potential
4 All of these
Explanation:
The electrical potential difference across the resting plasma membrane is called as the resting potential.
BIOXI21: NEURAL CONTROL AND COORDINATION
340529
During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric change?
1 First positive, then negative and continue to be negative
2 First negative, then positive and continue to be positive
3 First positive, then negative and again back to positive
4 First negative, then positive and again back to negative
Explanation:
During depolarisation, the charge within the cell rapidly shifts from negative to positive. For this rapid change to take place within the interior of the cell, several events must occur along the plasma membrane of the cell as well. While the sodium potassium pump continues to work, the voltage gated ion channels that had been closed while the cell was at resting potential have been opened by an electrical stimulus. As the sodium rushes back into the cell the positive sodium ions raise the charge inside the cell from negative to positive. Once the interior of the cell becomes positively charged, depolarisation of the cell is complete.
AIPMT - 2007
BIOXI21: NEURAL CONTROL AND COORDINATION
340530
A wave of action potential travelling through the neuron is called as
1 Resting impulse
2 Nerve impulse
3 Motor impulse
4 Repolarisation
Explanation:
A wave of action potential travelling through the neuron is called as nerve impulse.
BIOXI21: NEURAL CONTROL AND COORDINATION
340531
Assertion : Acetylcholine transmits the nerve impulse across a synapse Reason : Acetylcholine is secreted by adrenergic neurons
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Acetylcholine is a neurotransmitter released from nerve endings (terminals) in both the peripheral and the central nervous systems. It is synthesised within the nerve terminal from choline. Most neuromuscular junctions use the neurotransmitter, acetylcholine, which is broken down by the enzyme acetylcholinesterase. Hence, the given Assertion is true but the Reason is false.
340527
Identify the correct statement which describes after events of depolarisation. i. The rise in the stimulus-induced permeability to \(\mathrm{Na}^{+}\)is extremely shortlived. ii. It is quickly followed by a rise in impermeability to \(\mathrm{K}^{+}\).
1 i is correct
2 ii is correct
3 Both are correct
4 Both are incorrect
Explanation:
After events of depolarisation is the rise in the stimulus-induced permeability to \(\mathrm{Na}^{+}\) is extremely shortlived. It is quickly followed by a rise in permeability to \(\mathrm{K}^{+}\).
BIOXI21: NEURAL CONTROL AND COORDINATION
340528
The electrical potential difference across the polarised plasma membrane during polarisation, is known as
1 Potential deficit
2 Resting potential
3 Action potential
4 All of these
Explanation:
The electrical potential difference across the resting plasma membrane is called as the resting potential.
BIOXI21: NEURAL CONTROL AND COORDINATION
340529
During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric change?
1 First positive, then negative and continue to be negative
2 First negative, then positive and continue to be positive
3 First positive, then negative and again back to positive
4 First negative, then positive and again back to negative
Explanation:
During depolarisation, the charge within the cell rapidly shifts from negative to positive. For this rapid change to take place within the interior of the cell, several events must occur along the plasma membrane of the cell as well. While the sodium potassium pump continues to work, the voltage gated ion channels that had been closed while the cell was at resting potential have been opened by an electrical stimulus. As the sodium rushes back into the cell the positive sodium ions raise the charge inside the cell from negative to positive. Once the interior of the cell becomes positively charged, depolarisation of the cell is complete.
AIPMT - 2007
BIOXI21: NEURAL CONTROL AND COORDINATION
340530
A wave of action potential travelling through the neuron is called as
1 Resting impulse
2 Nerve impulse
3 Motor impulse
4 Repolarisation
Explanation:
A wave of action potential travelling through the neuron is called as nerve impulse.
BIOXI21: NEURAL CONTROL AND COORDINATION
340531
Assertion : Acetylcholine transmits the nerve impulse across a synapse Reason : Acetylcholine is secreted by adrenergic neurons
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
Explanation:
Acetylcholine is a neurotransmitter released from nerve endings (terminals) in both the peripheral and the central nervous systems. It is synthesised within the nerve terminal from choline. Most neuromuscular junctions use the neurotransmitter, acetylcholine, which is broken down by the enzyme acetylcholinesterase. Hence, the given Assertion is true but the Reason is false.