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Question

Loss of dopamine releasing neurons is associated with

A
hydrocephalus
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B
anencephaly
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C
Parkinson’s disease
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D
None of these
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Solution

The correct option is C Parkinson’s disease
Midbrain also contains various nuclei such as the left and the right substantia nigra which are largely and densely pigmented. Neurons that release dopamine, extending from the substantia nigra to the basal ganglia, help control subconscious muscle activities. Loss of these neurons is associated with Parkinson’s disease.
Anencephaly refers to the condition when the brain fails to develop in an embryo, leading to the deformation of cranial cavity.
Hydrocephalus refers to the enlarged cranial cavity due to excessive cerebrospinal fluid production.

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