HUMAN PHYSIOLOGY
CONTROL AND COORDINATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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speeds up the transmission of nerve impulses
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receives information from other neurones
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transmits impulses from the cell body to neurones
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facilitates the transmission of nerve impulses in one direction
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Detailed explanation-1: -Their job is to carry chemical signals (“messages”) from one neuron (nerve cell) to the next target cell. The next target cell can be another nerve cell, a muscle cell or a gland.
Detailed explanation-2: -Because neurotransmitter storage vesicles and receptors are present in one location, impulse transmission occurs only in one direction.
Detailed explanation-3: -The nerve impulse travels in the form of electrical charge from axon end to the synapse. Here, the electrical impulse is converted to the chemical impulse in the synaptic cleft. Further this nerve impulse flows from synaptic cleft to dendritic tips, converting the chemical impulse to electrical impulse.
Detailed explanation-4: -Neurons communicate with each other at specific points or junctions called synapses. These synapses can be chemical, communicating via chemical messengers or electricity, where ions flow between cells. Hence, the transmission of nerve impulses occurs through synapses.