Suppose the terminal ends of axon are in contact with dendrites of four adjacent neurons, the nerve impulse of the axon will

Travel in all the four neurons

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Get distributed in all four neurons resulting in a weal impulse

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Travel only in one neuron, which is in closest contact and with the same intensity

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Travel in none of the neurons because the impulse travels from dendrites of one neuron into the axon of another neuron

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Solution

The correct option is A Travel in all the four neurons
Nerves are made up of nerve cells or neurons. Each neuron has dendrites, cell body, and axon. Neurons meet with other neurons, sensory receptors, and tissues at synapses. The synapses are junctions that allow neurons to communicate with each other, sense receptors, muscles, and glands. As the impulse travels from dendrite of one neuron to axon of the other neuron, if the terminal ends of the axon are in contact with dendrites of four adjacent neurons, the nerve impulse of the axon will travel in all four neurons. Thus, the correct answer is option A.

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Q. Question 21
Which of the following statements about transmission of nerve impulse is incorrect?

(a) Nerve impulse travels from dendritic end towards axonal end.
(b) At the dendritic end electrical impulses bring about the release of some chemicals which generate an electrical impulse at the axonal end of another neuron.
(c) The chemicals released from the axonal end of one neuron cross the synapse and generate a similar electrical impulse in a dendrite of another neuron.
(d) A neuron transmits electrical impulses not only to another neuron but also to muscle and gland cells.

Question 3
In a synapse, chemical signal is transmitted from

(a) dendritic end of one neuron to axonal end of another neuron
(b) axon to the cell body of the same neuron
(c) cell body to the axonal end of the same neuron
(d) axonal end of one neuron to dendritic end of another neuron

Q. The point of contact between the axon terminals of one neuron with the dendrite of another neuron is called __________.

Q. Electrical impulse travels in a neuron from :
(a) dendrite → axon → axon end → cell body
(b) cell body → dendrite → axon → axon end
(c) dendrite → cell body → axon → axon end
(d) axon end → axon → cell body → dendrite

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