Identify the cerebral artery and side affected in a patient presenting with motor aphasia due to an anterior lesion.

Middle Cerebral Artery (MCA), left hemisphere. Key diagnostic features include impaired speech production with preserved comprehension, often due to Broca's area involvement. Clinical pearls: Motor aphasia typically results from lesions in the dominant hemisphere, which is the left hemisphere in right-handed individuals. Common pitfalls include confusing motor aphasia with Wernicke's aphasia, which affects language comprehension and is associated with posterior lesions.