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प्रश्न
Distinguish between Impulse conduction in a myelinated nerve fibre and unmyelinated nerve fibre
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उत्तर
| Impulse conduction in a myelinated nerve fibre | Impulse conduction in an unmyelinated nerve fibre | |
| 1. | In a myelinated nerve fibre, the action potential is conducted from one node to another. | In an unmyelinated nerve fibre, the action potential is not conducted from node to node. It is carried along the whole length of the nerve fibre |
| 2. | The conduction of impulses is faster | The conduction of impulses is slower. |
| 3. | It has less energy. | It has more energy. |
| 4. | In these, buoyancy and the transmission of inspiration are found. | In these, inspiration transmission is found in the form of self-propagating electrical waves. |
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संबंधित प्रश्न
Draw a labelled diagram of the following:
Neuron
Briefly explain the following terms: Synapse
The number of Spinal nerves in a human being are :
(A) 31 pairs
(B) 10 pairs
(C) 21 pairs
(D) 30 pairs
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Given below is the diagram of a neuron. Name the parts numbered 1-5.
What are the advantages of having a nervous system?
During synaptic transmission of nerve impulse, neurotransmitter (P) is released from synaptic vesicles by the action of ions (Q). Choose the correct P and Q.
All of the following are associated with the myeline sheath except
The action potential occurs in response to a threshold stimulus; but not at sub-threshold stimuli. What is the name of the principle involved?
Bipolar neurons are found in ______
______ carries the impulse towards the cell body.
What does the neural tissue consist of?
What is the connective tissue covering around the nerve fascicle called?
A microscopic gap between a pair of adjacent neurons over which nerve impulses pass is called ____________.
Assertion: Impulse travels from dendrite to cell body and then along the axon to its end.
Reason: Information acquired at the end of the dendrite tip of a nerve cell sets of an electric impulse.
Each branch of the axon terminates as a bulb-like structure called ______
Identify the parts of a neuron which help the nerve impulse to travel away from the cell body.
Any factor that can bring a change in the body of an organism is called ______.
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Axons : Nerve :: Cytons : ______.
Give reason:
Neurotransmitters are broken down by an enzyme just after passing an impulse from one neuron to the other.
