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NEET Sample Paper NEET Sample Test Paper-11

  • question_answer
    Parkinson's disease (characterized by tremors and progressive rigidity of limbs) is caused by  degeneration of brain neurons that are involved in movement control and make use of neurotrans- mitter:

    A)  Norepinephrine 

    B)  Acetylcholine

    C)  GABA             

    D)  Dopamine

    Correct Answer: D

    Solution :

     Parkinsonism is caused by degeneration of neurons in Substantia Nigra tract which are essentially dopaminergic. This striatum controls muscle tones and coordinates movements. An imbalance is caused by deficiency of dopamine (an inhibitory neurotransmitter)


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