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प्रश्न
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 |
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उत्तर
| Application of stimulus on a resting nerve |
| ⇓ |
| Permeability of membrane changes |
| ⇓ |
| Na+ ions diffuse into the neuron from the ECF |
| ⇓ |
| Positive ions inside axon increases |
| ⇓ |
|
Membrane potential changes from – 70mV to + 30mV |
| ⇓ |
| Polarity reverses and depolarisation takes place |
| ⇓ |
| Repolarisation - potassium gates open |
| ⇓ |
| K+ ions diffuse out of the axon |
| ⇓ |
| The inside of the membrane (becomes less and less positive) becomes negative once again |
| ⇓ |
| Axoplasm becomes negatively charged and ECF becomes positive |
संबंधित प्रश्न
Compare the following:
Resting potential and action potential
A person is showing symptoms like increased BMR, heart rate, pulse rate, blood pressure and deposition of fats in eye sockets. Name the disease he is suffering from.
What are the number of Na+ ions pumped out, and K+ ions pumped into the cell, with respect to the Na+ - K+ pump?
Neurotransmitters are removed from synaptic cleft by ____________ after transmission of impulse.
What is the average potential difference across the nerve cell membrane?
Identify the value of action potential.
When stimulus is applied to a membrane of neuron, it causes rapid influx of ____________.
Potential difference across resting membrane is negative. This is due to differential distribution of the following ions ______.
Resting membrane potential is maintained by ______.
During resting potential, the axonal membrane is polarised, indicate the movement of +ve and –ve ions leading to polarisation diagrammatically.
