Final answer:
The brain stem is a bidirectional passageway for all tracts connecting the cerebrum and the spinal cord. It coordinates motor control signals and controls important functions.
Step-by-step explanation:
The brain stem is a bidirectional passageway for all tracts connecting the cerebrum and the spinal cord.
It consists of the midbrain, medulla oblongata, and the pons.
The brainstem coordinates motor control signals sent from the brain to the body and controls important functions such as alertness, breathing, heart rate, and sensory information integration.