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How Are the Messages Carried Across a Synapse? Explain with the Help of a Labelled Diagram. - Science

 How are the messages carried across a synapse? Explain with the help of a labelled diagram.

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A receptor in a sense organ is in touch with the dendrites of the sensory neuron. When a stimulus acts on the receptor, a chemical reaction is initiated that produces an electrical impulse in the receptor. This impulse travels from the dendrites of the sensory neuron (say A) to its cell body and, then, along its axon. At the end of the axon of the sensory neuron A, the electrical impulse releases chemical substances called neurotransmitters into the synapse which cross the synapse and start a similar electrical impulse in the dendrites of the next neuron (say B). From the dendrites, this electrical impulse is carried to the cell body and, then, to the axon of the second neuron.

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Lakhmir Singh Class 10 Biology (Science)
Chapter 2 Control and Coordination
Q 56.2 | Page 117
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