Advertisements
Advertisements
प्रश्न
Compare the following:
Resting potential and action potential
उत्तर
| Resting potential | Action potential | |
| 1. | The difference in electric potential across the recycled charge at rest is shown. | The exciton or outlook orchestra, is depolarized whenever stimulation is observed in any part of the axon. |
| 2. | A potential of -70 mV is generated in the plasma membrane, which is called the static phase potential. | At that place, the potential difference reduces to 30 mV, this is called active potential. |
| 3. | It is the potential difference across the nerve fibre when there is no conduction of nerve impulses. | It is the potential difference across nerve fibre when there is conduction of nerve impulses. |
| 4. | The resting potential describes what actually happens to a neuron when it is at rest. | An action potential occurs when a neuron sends a message down an axon that travels away from the neuron cell body. |
| 5. | The membrane is more permeable to K+ ions than to Na+ ions | The membrane is more permeable to Na+ ions than to K+ ions. |
APPEARS IN
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.
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.
Sketch and label formation of typical spinal nerve.
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 |
Dendrites transmit impulse ______ cell body and axon transmit impulse ______ cell body.
What are the number of Na+ ions pumped out, and K+ ions pumped into the cell, with respect to the Na+ - K+ pump?
Which ions is the resting membrane more permeable to?
Neurotransmitters are removed from synaptic cleft by ____________ after transmission of impulse.
What is the average potential difference across the nerve cell membrane?
Under which of the following conditions will the ionic gradients across the resting membrane be maintained?
Which of the following situations is responsible for resting membrane potential?
Identify the value of action potential.
Resting membrane potential is maintained by ______.
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.
The electronegativity inside the membrane is due to
Write a short note on the following:
Synapse
Write one word for the following:
Point of contact between two nerve cells.
