Which area of the brain controls language expression and is typically located in the left frontal lobe?

The area of the brain that controls language expression and is typically located in the left frontal lobe is Broca's Area. This region is primarily responsible for the production of speech and language processing, which includes the formulation of grammatically correct sentences and the movement required for speech. Damage to Broca's Area can lead to Broca's aphasia, characterized by difficulties in speech production, where individuals may understand language well but struggle to speak fluently.

Wernicke's Area, although involved in language, is mainly associated with language comprehension and is located in the left temporal lobe, making it distinct from the area responsible for expression. The auditory cortex, located in the temporal lobe, processes auditory information but is not specifically linked to language expression. The angular gyrus is involved in processes related to reading and writing rather than directly controlling speech production. Thus, Broca's Area stands out as the key area for language expression in the left frontal lobe.