Final answer:
The region located between the medulla and the midbrain is termed the pons, which plays a critical role in connecting the cerebellum to the brain stem and regulating vital bodily functions.
Step-by-step explanation:
The term for the region between the medulla and the midbrain is the pons. The pons is a significant part of the brain stem, which includes the midbrain, pons, and medulla. This structure serves as the main connection between the cerebellum and the rest of the brain, regulating various crucial functions such as the cardiovascular and respiratory systems, and is involved in brain activity during sleep.