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प्रश्न
What is the difference between electrical transmission and chemical transmission?
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उत्तर
| Electrical Transmission | Chemical Transmission |
| i. Electrical transmission is mediated by electrical synapses. | i. Chemical transmission is mediated through neurotransmitters. |
| ii. Pre- and postsynaptic neurons' membranes are relatively close together. | ii. A synaptic cleft separates the membranes of pre-and postsynaptic neurons. |
| iii. Across the synapses, electrical current can travel straight from one neuron to the next. | iii. Neurotransmitters play a role in the transmission of synaptic impulses. |
| iv. This transmission is more efficient. | iv. This is a slower transmission. |
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संबंधित प्रश्न
Compare the following:
Resting potential and action potential
Sketch and label formation of typical spinal nerve.
Define Saltatory conduction.
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.
The axoplasm inside the axon contains high concentration of (i) ions and low concentration of _(ii)_ ions, during the resting state of the neuron.
What is the average potential difference across the nerve cell membrane?
Which of the following situations is responsible for resting membrane potential?
Identify the value of action potential.
Which of the following statements is TRUE for medullated nerve fibre?
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 ______.
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.
Write a short note on the following:
Synapse
