* The brain's functional region responsible for language processing, Broca's area, is located in the frontal lobe.** (This sentence focuses on a specific brain region.)
* The functional region of the city known as "downtown" is characterized by high-rise buildings and a concentration of businesses.** (This sentence uses "functional region" to describe a geographical area.)
* Scientists are studying the functional regions of the human heart to better understand its role in regulating blood pressure.** (This sentence emphasizes the importance of understanding the specific roles of different parts of an organ.)
* The functional region of the car's engine responsible for combustion is highly complex.** (This sentence describes a specific part of a machine and its function.)
The key is to understand that "functional region" refers to a specific area within a larger entity that performs a particular function. You can apply this concept to various fields like biology, geography, technology, and more.