What is the function of the brainstem in humans?

The brainstem is a vital part of the human brain that connects the brain to the spinal cord and controls essential life functions. It regulates involuntary processes such as heart rate, breathing, and blood pressure, making it crucial for survival. The brainstem also controls reflexes, regulates sleep, and serves as a conduit for messages traveling between the brain and the body. It includes three main sections: the medulla oblongata, pons, and midbrain, each responsible for different functions related to basic bodily processes.