Is the midbrain part of brainstem?

Yes, the midbrain is part of the brainstem. The brainstem is the lowest part of the brain and connects the cerebrum (the upper part of the brain) to the spinal cord. It is made up of three parts: the medulla oblongata, the pons, and the midbrain. The midbrain is located in the middle of the brainstem and is responsible for various functions, including eye movements, motor coordination, and auditory and visual processing.