Which section of the brainstem connects continuously with the spinal cord and includes the decussation of the pyramids?

The medulla oblongata is the section of the brainstem that connects continuously with the spinal cord and is notably involved in vital functions such as breathing, heart rate, and blood pressure regulation. One of the critical features of the medulla is the decussation of the pyramids, which refers to the crossing of motor fibers from one side of the brain to the opposite side of the body. This crossing allows for the contralateral control of motor functions; that is, the left side of the brain controls the right side of the body and vice versa.

The medulla oblongata's role in the medullary pyramids is essential for the voluntary motor pathway, which is why it is closely associated with the spinal cord as they transmit motor information to and from the brain. Knowledge of the medulla's anatomy and functions is crucial for understanding brain and spinal cord interactions during neurophysiologic monitoring procedures.