What three components is the brainstem composed of?

1. Medulla oblongata: The medulla oblongata is the lowest part of the brainstem and is continuous with the spinal cord. It controls automatic functions such as breathing, heart rate, and digestion.

2. Pons: The pons is located above the medulla oblongata and is responsible for relaying sensory information from the face and head to the cerebrum. It also plays a role in controlling sleep and wakefulness.

3. Midbrain: The midbrain is the most superior part of the brainstem and is located between the pons and the diencephalon. It contains important structures such as the substantia nigra, which is involved in motor control, and the red nucleus, which is involved in coordinating eye movements.