J & K CET Medical J & K - CET Medical Solved Paper-2007

  • question_answer
    The one way or unidirectional transmission of nerve impulse in nerve cells is due to the presence of

    A)                  synapses                           

    B)                  myelin sheath

    C)                  membrane polarity       

    D)                  intemeurons

    Correct Answer: A

    Solution :

                    A nerve impulse may be defined as wave of depolarization of the membrane of the nerve cell. The nerve impulse travels along a neuron or across a synapse (junction), between one neuron and another or between a neuron and an effector, such as a muscle or gland. The synapse is an area of functional contact between one neuron and another for the purpose of transferring information. Sir Charles Sherrington (1861-1954) was the first person who used the term synapse to the junctional points between two neurons.


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