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Which of these statements about neurodegenerative diseases is/are correct?W. Parkinson's Disease is characterised by decreased secretion of dopamine.X.  Alzheimer’s Disease is characterised by a minimum 70-80% decrease in serotonin production.Y.   Multiple Sclerosis leads to significant de-myelination of neurons in the central nervous system.Z.  Motor Neuron Disease is characterized by the presence of Lewy bodies within neurons.Question 44Select one:a.if only W, X and Y are correctb.if only W and Y are correctc.if only X and Z are correctd.if only Z is correcte.if all are correct

Question

Which of these statements about neurodegenerative diseases is/are correct?W. Parkinson's Disease is characterised by decreased secretion of dopamine.X.  Alzheimer’s Disease is characterised by a minimum 70-80% decrease in serotonin production.Y.   Multiple Sclerosis leads to significant de-myelination of neurons in the central nervous system.Z.  Motor Neuron Disease is characterized by the presence of Lewy bodies within neurons.Question 44Select one:a.if only W, X and Y are correctb.if only W and Y are correctc.if only X and Z are correctd.if only Z is correcte.if all are correct

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Solution

The correct answer is b. if only W and Y are correct.

Explanation:

W. Parkinson's Disease is characterised by decreased secretion of dopamine. This statement is correct. Parkinson's disease is a neurodegenerative disorder that affects predominately dopamine-producing neurons in a specific area of the brain.

X. Alzheimer’s Disease is characterised by a minimum 70-80% decrease in serotonin production. This statement is incorrect. Alzheimer's disease is characterized by the formation of amyloid plaques in the brain and tangles of a protein called tau, not by a decrease in serotonin production.

Y. Multiple Sclerosis leads to significant de-myelination of neurons in the central nervous system. This statement is correct. Multiple sclerosis is a disease in which the immune system eats away at the protective covering of nerves (myelin), leading to communication problems between your brain and the rest of your body.

Z. Motor Neuron Disease is characterized by the presence of Lewy bodies within neurons. This statement is incorrect. Motor neuron diseases are characterized by the gradual degeneration and death of motor neurons. Lewy bodies are associated with Parkinson's disease, not motor neuron disease.

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