BRAIN
CEREBRUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Broca’s area, usually in the left hemisphere
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Broca’s area, usually in the right hemisphere
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Wernicke’s area, Broca’s area, and the intervening cortical and subcortical structures
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Lower motor neurons or corticobrainstem neurons
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Neurons connecting Wernicke’s area with Broca’s area
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Detailed explanation-1: -Dysarthria can be due to lesions in the cortical motor-face area, cerebellum, brainstem, or cranial nerves or the innervation of muscles for articulation. Dysarthria can occur in several diseases, both neurologic and nonneurologic. Dysarthria can be drug-induced or a result of exposure to environmental toxins.
Detailed explanation-2: -There are several types of dysarthria: Flaccid dysarthria-from damage of the cranial nerves or regions of the brainstem and midbrain. Spastic dysarthria-from damage to the motor regions in the cortex, on both sides of the brain.
Detailed explanation-3: -Cranial nerves that control the muscles relevant to dysarthria include the trigeminal nerve’s motor branch (V), the facial nerve (VII), the glossopharyngeal nerve (IX), the vagus nerve (X), and the hypoglossal nerve (XII).