Most of the unconscious functions are regulated by the brainstem. The regions of brainstem include,
• Hindbrain
• Midbrain
• Diencephalon
Hindbrain id the extension of the spinal cord. Sensory inputs are first received by the midbrain. The motor and sensory information are integrated by diencephalon.
Thus, the blanks can be filled with hindbrain; midbrain; diencephalon.