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प्रश्न
Define Saltatory conduction.
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उत्तर
Saltatory conduction is the rapid passage of action potential along myelinated nerves from one node of Ranvier to the other.
संबंधित प्रश्न
Explain the following process:
Transmission of a nerve impulse across a chemical synapse
Explain the role of Na+ in the generation of action potential.
Complete the flowchart of the process of conduction of nerve impulses.
| Application of stimulus on a resting nerve |
| ⇓ |
| Permeability of membrane changes |
| ⇓ |
| ______________________________ |
| ⇓ |
| Positive ions inside axon increases |
| ⇓ |
| ________________________________ |
| ⇓ |
| Polarity reverses and depolarisation takes place |
| ⇓ |
| Repolarisation - potassium gates open |
| ⇓ |
| ______________________________ |
| ⇓ |
| ______________________________ |
| ⇓ |
| Axoplasm becomes negatively charged and ECF becomes positive |
Neurotransmitters are removed from synaptic cleft by ____________ after transmission of impulse.
The axoplasm inside the axon contains high concentration of (i) ions and low concentration of _(ii)_ ions, during the resting state of the neuron.
Under which of the following conditions will the ionic gradients across the resting membrane be maintained?
Resting membrane potential is maintained by ______.
Complete the statement by choosing appropriate match among the following -
| a. Resting potential | i. Chemicals involved in the transmission of impulses at synapses. |
| b. Nerve impulse | ii. Gap between the pre synaptic and post synaptic neurons |
| c. Synaptic cleft | iii. Electrical potential difference across the resting neural membrane |
| d. Neurotransmitters | iv. An electrical wave like response of a neuron to a stimulation |
Explain the process of the transport and release of a neurotransmitter with the help of a labelled diagram showing a complete neuron, axon terminal and synapse.
During the phase of depolarisation of nerve impulse, ______.
