Brainstem
connects diencephalon to the spinal cord
Midbrain
uppermost part of brainstem
pons
middle region
Medulla Oblongata or Medulla
-lower part of brainstem that connect spinal cord
-regulates major functions of autonomic nervous system like heart rate and breathing
Reticular Formation
small clusters of gray matter that exist within white matter of different regions of brainstem and spinal cord