284602
Assertion: Acetylcholine participates in the nerve impulse transmission across a synapse. Reason: Acetylcholine is secreted by adrenergic fibres.
1 If both Assertion and Reason are true and the reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are true but reason is not a correct explanation of the Assertion.
3 If Assertion is true but the Reason is false.
4 If both Assertion and Reason are false.
Explanation:
C Acetylcholine is a neurotransmitter that is released by neurons at synapse. It binds to receptors on the postsynaptic neuron, which causes a change in the electrical potential of the post synaptic neuron. This change in electrical potential can either excite or inhibit the postsynaptic neuron. - Adrenergic fibres secrete the neurotransmitter norepinephrine. Acetylcholine is secreted by cholinergic fibres.
AIIMS-1996
Neural Control and Coordination
284613
Identify \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) and \(\mathrm{D}\) in the following graph regarding nerve impulse transmission, Options:
C A. Threshold stimulus : Minimum stimulation required to trigger an action potential. B. Depolarization: Influx of \(\mathrm{Na}^{+}\)ions sodium ions rush in, causing depolarization. C. Repolarisation : Efflux of \(\mathrm{K}^{+}\)ions potassium ions leave, repolarizing the membrane. D. Hyperpolarisation: Short period of increased negativity, making the neuron less responsive.
AP EAMCET-24.04.2019 Shift-I
Neural Control and Coordination
284621
Assertion (A) : The conduction of nerve impulse follows all or none principle Reason (R) : The action potential is formed to a threshold stimuli but does not form a subthreshold stimuli The correct option among the following is
1 Both \(\mathrm{A}\) and \(\mathrm{R}\) are true. \(\mathrm{R}\) is correct explanation for \(\mathrm{A}\)
2 Both \(\mathrm{A}\) and \(\mathrm{R}\) are true. \(\mathrm{R}\) is not correct explanation for \(\mathrm{A}\)
3 A is true. But \(\mathrm{R}\) is false
4 A is false. But \(\mathrm{R}\) is true
Explanation:
A The all-or-none principle describes the neuron will either fire on action potential fully if the stimulus is strong enough to reach the threshold level, or won't fire at all if the stimulus is weaker (subthreshold). This principle is supported by the fact that action potentials only occur when the stimulus is strong enough to cross the threshold.
TS EAMCET-28.09.2020 Shift-II
Neural Control and Coordination
284614
Node of Ranvier is found in:
1 Right auricle
2 Muscle bundles
3 Dendrite
4 Axon
Explanation:
D Nodes of Ranvier is found in myelinated nerve fibres (axon). These are the gaps between two adjacent myelin sheaths.
DUMET-2003
Neural Control and Coordination
284548
Study the following and pick up the correct statements : I. Microglial cells develop from endoderm II. Oligodendrocytes form myelin sheath III. Astrocytes help in blood-brain barrier IV. Ependymal cells are phagocytic
1 II, III
2 I, II
3 III, IV
4 I, III
Explanation:
A The mylin starch is greatly extend and modified plasma numbrane wraped around the nerve axon in a spiral fashion. The mylin nembrane originate from and are a part of the schwann cells in the peripherol nervous system and the oligodendroglial cells in central nervous system. - Astrocyte and a star shaped glial all of the central nervous system. - Astrocyte help in blood brain bareer
284602
Assertion: Acetylcholine participates in the nerve impulse transmission across a synapse. Reason: Acetylcholine is secreted by adrenergic fibres.
1 If both Assertion and Reason are true and the reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are true but reason is not a correct explanation of the Assertion.
3 If Assertion is true but the Reason is false.
4 If both Assertion and Reason are false.
Explanation:
C Acetylcholine is a neurotransmitter that is released by neurons at synapse. It binds to receptors on the postsynaptic neuron, which causes a change in the electrical potential of the post synaptic neuron. This change in electrical potential can either excite or inhibit the postsynaptic neuron. - Adrenergic fibres secrete the neurotransmitter norepinephrine. Acetylcholine is secreted by cholinergic fibres.
AIIMS-1996
Neural Control and Coordination
284613
Identify \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) and \(\mathrm{D}\) in the following graph regarding nerve impulse transmission, Options:
C A. Threshold stimulus : Minimum stimulation required to trigger an action potential. B. Depolarization: Influx of \(\mathrm{Na}^{+}\)ions sodium ions rush in, causing depolarization. C. Repolarisation : Efflux of \(\mathrm{K}^{+}\)ions potassium ions leave, repolarizing the membrane. D. Hyperpolarisation: Short period of increased negativity, making the neuron less responsive.
AP EAMCET-24.04.2019 Shift-I
Neural Control and Coordination
284621
Assertion (A) : The conduction of nerve impulse follows all or none principle Reason (R) : The action potential is formed to a threshold stimuli but does not form a subthreshold stimuli The correct option among the following is
1 Both \(\mathrm{A}\) and \(\mathrm{R}\) are true. \(\mathrm{R}\) is correct explanation for \(\mathrm{A}\)
2 Both \(\mathrm{A}\) and \(\mathrm{R}\) are true. \(\mathrm{R}\) is not correct explanation for \(\mathrm{A}\)
3 A is true. But \(\mathrm{R}\) is false
4 A is false. But \(\mathrm{R}\) is true
Explanation:
A The all-or-none principle describes the neuron will either fire on action potential fully if the stimulus is strong enough to reach the threshold level, or won't fire at all if the stimulus is weaker (subthreshold). This principle is supported by the fact that action potentials only occur when the stimulus is strong enough to cross the threshold.
TS EAMCET-28.09.2020 Shift-II
Neural Control and Coordination
284614
Node of Ranvier is found in:
1 Right auricle
2 Muscle bundles
3 Dendrite
4 Axon
Explanation:
D Nodes of Ranvier is found in myelinated nerve fibres (axon). These are the gaps between two adjacent myelin sheaths.
DUMET-2003
Neural Control and Coordination
284548
Study the following and pick up the correct statements : I. Microglial cells develop from endoderm II. Oligodendrocytes form myelin sheath III. Astrocytes help in blood-brain barrier IV. Ependymal cells are phagocytic
1 II, III
2 I, II
3 III, IV
4 I, III
Explanation:
A The mylin starch is greatly extend and modified plasma numbrane wraped around the nerve axon in a spiral fashion. The mylin nembrane originate from and are a part of the schwann cells in the peripherol nervous system and the oligodendroglial cells in central nervous system. - Astrocyte and a star shaped glial all of the central nervous system. - Astrocyte help in blood brain bareer
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Neural Control and Coordination
284602
Assertion: Acetylcholine participates in the nerve impulse transmission across a synapse. Reason: Acetylcholine is secreted by adrenergic fibres.
1 If both Assertion and Reason are true and the reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are true but reason is not a correct explanation of the Assertion.
3 If Assertion is true but the Reason is false.
4 If both Assertion and Reason are false.
Explanation:
C Acetylcholine is a neurotransmitter that is released by neurons at synapse. It binds to receptors on the postsynaptic neuron, which causes a change in the electrical potential of the post synaptic neuron. This change in electrical potential can either excite or inhibit the postsynaptic neuron. - Adrenergic fibres secrete the neurotransmitter norepinephrine. Acetylcholine is secreted by cholinergic fibres.
AIIMS-1996
Neural Control and Coordination
284613
Identify \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) and \(\mathrm{D}\) in the following graph regarding nerve impulse transmission, Options:
C A. Threshold stimulus : Minimum stimulation required to trigger an action potential. B. Depolarization: Influx of \(\mathrm{Na}^{+}\)ions sodium ions rush in, causing depolarization. C. Repolarisation : Efflux of \(\mathrm{K}^{+}\)ions potassium ions leave, repolarizing the membrane. D. Hyperpolarisation: Short period of increased negativity, making the neuron less responsive.
AP EAMCET-24.04.2019 Shift-I
Neural Control and Coordination
284621
Assertion (A) : The conduction of nerve impulse follows all or none principle Reason (R) : The action potential is formed to a threshold stimuli but does not form a subthreshold stimuli The correct option among the following is
1 Both \(\mathrm{A}\) and \(\mathrm{R}\) are true. \(\mathrm{R}\) is correct explanation for \(\mathrm{A}\)
2 Both \(\mathrm{A}\) and \(\mathrm{R}\) are true. \(\mathrm{R}\) is not correct explanation for \(\mathrm{A}\)
3 A is true. But \(\mathrm{R}\) is false
4 A is false. But \(\mathrm{R}\) is true
Explanation:
A The all-or-none principle describes the neuron will either fire on action potential fully if the stimulus is strong enough to reach the threshold level, or won't fire at all if the stimulus is weaker (subthreshold). This principle is supported by the fact that action potentials only occur when the stimulus is strong enough to cross the threshold.
TS EAMCET-28.09.2020 Shift-II
Neural Control and Coordination
284614
Node of Ranvier is found in:
1 Right auricle
2 Muscle bundles
3 Dendrite
4 Axon
Explanation:
D Nodes of Ranvier is found in myelinated nerve fibres (axon). These are the gaps between two adjacent myelin sheaths.
DUMET-2003
Neural Control and Coordination
284548
Study the following and pick up the correct statements : I. Microglial cells develop from endoderm II. Oligodendrocytes form myelin sheath III. Astrocytes help in blood-brain barrier IV. Ependymal cells are phagocytic
1 II, III
2 I, II
3 III, IV
4 I, III
Explanation:
A The mylin starch is greatly extend and modified plasma numbrane wraped around the nerve axon in a spiral fashion. The mylin nembrane originate from and are a part of the schwann cells in the peripherol nervous system and the oligodendroglial cells in central nervous system. - Astrocyte and a star shaped glial all of the central nervous system. - Astrocyte help in blood brain bareer
284602
Assertion: Acetylcholine participates in the nerve impulse transmission across a synapse. Reason: Acetylcholine is secreted by adrenergic fibres.
1 If both Assertion and Reason are true and the reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are true but reason is not a correct explanation of the Assertion.
3 If Assertion is true but the Reason is false.
4 If both Assertion and Reason are false.
Explanation:
C Acetylcholine is a neurotransmitter that is released by neurons at synapse. It binds to receptors on the postsynaptic neuron, which causes a change in the electrical potential of the post synaptic neuron. This change in electrical potential can either excite or inhibit the postsynaptic neuron. - Adrenergic fibres secrete the neurotransmitter norepinephrine. Acetylcholine is secreted by cholinergic fibres.
AIIMS-1996
Neural Control and Coordination
284613
Identify \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) and \(\mathrm{D}\) in the following graph regarding nerve impulse transmission, Options:
C A. Threshold stimulus : Minimum stimulation required to trigger an action potential. B. Depolarization: Influx of \(\mathrm{Na}^{+}\)ions sodium ions rush in, causing depolarization. C. Repolarisation : Efflux of \(\mathrm{K}^{+}\)ions potassium ions leave, repolarizing the membrane. D. Hyperpolarisation: Short period of increased negativity, making the neuron less responsive.
AP EAMCET-24.04.2019 Shift-I
Neural Control and Coordination
284621
Assertion (A) : The conduction of nerve impulse follows all or none principle Reason (R) : The action potential is formed to a threshold stimuli but does not form a subthreshold stimuli The correct option among the following is
1 Both \(\mathrm{A}\) and \(\mathrm{R}\) are true. \(\mathrm{R}\) is correct explanation for \(\mathrm{A}\)
2 Both \(\mathrm{A}\) and \(\mathrm{R}\) are true. \(\mathrm{R}\) is not correct explanation for \(\mathrm{A}\)
3 A is true. But \(\mathrm{R}\) is false
4 A is false. But \(\mathrm{R}\) is true
Explanation:
A The all-or-none principle describes the neuron will either fire on action potential fully if the stimulus is strong enough to reach the threshold level, or won't fire at all if the stimulus is weaker (subthreshold). This principle is supported by the fact that action potentials only occur when the stimulus is strong enough to cross the threshold.
TS EAMCET-28.09.2020 Shift-II
Neural Control and Coordination
284614
Node of Ranvier is found in:
1 Right auricle
2 Muscle bundles
3 Dendrite
4 Axon
Explanation:
D Nodes of Ranvier is found in myelinated nerve fibres (axon). These are the gaps between two adjacent myelin sheaths.
DUMET-2003
Neural Control and Coordination
284548
Study the following and pick up the correct statements : I. Microglial cells develop from endoderm II. Oligodendrocytes form myelin sheath III. Astrocytes help in blood-brain barrier IV. Ependymal cells are phagocytic
1 II, III
2 I, II
3 III, IV
4 I, III
Explanation:
A The mylin starch is greatly extend and modified plasma numbrane wraped around the nerve axon in a spiral fashion. The mylin nembrane originate from and are a part of the schwann cells in the peripherol nervous system and the oligodendroglial cells in central nervous system. - Astrocyte and a star shaped glial all of the central nervous system. - Astrocyte help in blood brain bareer
284602
Assertion: Acetylcholine participates in the nerve impulse transmission across a synapse. Reason: Acetylcholine is secreted by adrenergic fibres.
1 If both Assertion and Reason are true and the reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are true but reason is not a correct explanation of the Assertion.
3 If Assertion is true but the Reason is false.
4 If both Assertion and Reason are false.
Explanation:
C Acetylcholine is a neurotransmitter that is released by neurons at synapse. It binds to receptors on the postsynaptic neuron, which causes a change in the electrical potential of the post synaptic neuron. This change in electrical potential can either excite or inhibit the postsynaptic neuron. - Adrenergic fibres secrete the neurotransmitter norepinephrine. Acetylcholine is secreted by cholinergic fibres.
AIIMS-1996
Neural Control and Coordination
284613
Identify \(\mathrm{A}, \mathrm{B}, \mathrm{C}\) and \(\mathrm{D}\) in the following graph regarding nerve impulse transmission, Options:
C A. Threshold stimulus : Minimum stimulation required to trigger an action potential. B. Depolarization: Influx of \(\mathrm{Na}^{+}\)ions sodium ions rush in, causing depolarization. C. Repolarisation : Efflux of \(\mathrm{K}^{+}\)ions potassium ions leave, repolarizing the membrane. D. Hyperpolarisation: Short period of increased negativity, making the neuron less responsive.
AP EAMCET-24.04.2019 Shift-I
Neural Control and Coordination
284621
Assertion (A) : The conduction of nerve impulse follows all or none principle Reason (R) : The action potential is formed to a threshold stimuli but does not form a subthreshold stimuli The correct option among the following is
1 Both \(\mathrm{A}\) and \(\mathrm{R}\) are true. \(\mathrm{R}\) is correct explanation for \(\mathrm{A}\)
2 Both \(\mathrm{A}\) and \(\mathrm{R}\) are true. \(\mathrm{R}\) is not correct explanation for \(\mathrm{A}\)
3 A is true. But \(\mathrm{R}\) is false
4 A is false. But \(\mathrm{R}\) is true
Explanation:
A The all-or-none principle describes the neuron will either fire on action potential fully if the stimulus is strong enough to reach the threshold level, or won't fire at all if the stimulus is weaker (subthreshold). This principle is supported by the fact that action potentials only occur when the stimulus is strong enough to cross the threshold.
TS EAMCET-28.09.2020 Shift-II
Neural Control and Coordination
284614
Node of Ranvier is found in:
1 Right auricle
2 Muscle bundles
3 Dendrite
4 Axon
Explanation:
D Nodes of Ranvier is found in myelinated nerve fibres (axon). These are the gaps between two adjacent myelin sheaths.
DUMET-2003
Neural Control and Coordination
284548
Study the following and pick up the correct statements : I. Microglial cells develop from endoderm II. Oligodendrocytes form myelin sheath III. Astrocytes help in blood-brain barrier IV. Ependymal cells are phagocytic
1 II, III
2 I, II
3 III, IV
4 I, III
Explanation:
A The mylin starch is greatly extend and modified plasma numbrane wraped around the nerve axon in a spiral fashion. The mylin nembrane originate from and are a part of the schwann cells in the peripherol nervous system and the oligodendroglial cells in central nervous system. - Astrocyte and a star shaped glial all of the central nervous system. - Astrocyte help in blood brain bareer
