Advertisements
Advertisements
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 |
Advertisements
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
Explain the following process:
Transmission of a nerve impulse across a chemical synapse
Long answer question.
Explain the process of conduction of nerve impulses up to the development of action potential.
Give function of astrocytes in nervous system.
What are the number of Na+ ions pumped out, and K+ ions pumped into the cell, with respect to the Na+ - K+ pump?
What is the average potential difference across the nerve cell membrane?
Which of the following is TRUE for the external tissue fluid in polarized state?
Potential difference across resting membrane is negative. This is due to differential distribution of the following ions ______.
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 |
Write a short note on the following:
Synapse
Write one word for the following:
Point of contact between two nerve cells.
