The region at the inferior portion of the upper brain stem depicts Medulla oblongata.
What is upper brain stem?
- "It is the posterior stalk-like part of the brain that connects the cerebrum with the spinal cord."
- It regulates balance, breathing and heart rate.
What is medulla oblongata?
- It is the lowest part of the brain and the lowest portion of the brainstem.
- It regulates heartbeat, breathing and blood pressure.
Hence, the answer is Medulla oblongata.
To know more about Medulla oblongata here
https://brainly.com/question/26723889
#SPJ2