The wings of pterosaurs (1), bats (2) and birds (3) are analogous as wings, but homologous as forelimbs. Evolutionary ancestry means that structures evolved from some structure in a common ancestor; for example, the wings of bats and the arms of primates are homologous in this sense.
â¦ Broca's area is located in the left frontal lobe, in close proximity of primary motor cortex. Wernicke's Area â¦ Wernicke's area sits in the left temporal lobe, very close to the auditory cortexâthe area involved in hearing.
Broca's Aphasia (expressive). When a stroke injures the frontal regions of the left hemisphere, different kinds of language problems can occur. This part of the brain is important for putting words together to form complete sentences.Injury to the left frontal area can lead to what is called Brocaâs aphasia.hen a stroke affects an extensive portion of the front and back regions of the left hemisphere, the result may be global aphasia. Survivors with global aphasia: May have great difficulty in understanding words and sentences.