Why do I need to know anatomy?
The image shows the brain with the left temporal lobe colored in light blue. The anatomy you need to know is simply that the left temporal lobe has to do with understanding language. If a person suffers an injury involving the left temporal lobe of the brain, the person may have difficulty understanding what people are saying. Furthermore, the injured person may know what they want to say, but is unable to say it. People will think the person is confused. In reality, the injured person doesn't understand the language and may not be confused at all!.
Understanding the basic anatomy lets you better understand the injury.