3D Medical Animation Still Shot Showing Different Parts of Mid-Brain The<unk>  (or<unk>  is the posterior stalk-like part of the brain that connects the cerebrum with the spinal cord. In the human brain the<unk>  is composed of the midbrain, the pons, and the medulla oblongata. The midbrain is continuous with the thalamus of the diencephalon through the tentorial notch, and sometimes the diencephalon is included in the<unk> . The<unk>  is very small, making up around only 2.6 percent of the brain's total weight. It has the critical roles of regulating cardiac, and respiratory function, helping to control heart rate and breathing rate. It also provides the main motor and sensory nerve supply to the face and neck via the cranial nerves. Ten pairs of cranial nerves come from the<unk> . Other roles include the regulation of the central nervous system and the body's sleep cycle. It is also of prime importance in the conveyance of motor and sensory pathways from the rest of the brain to the body, and from the body back to the brain. These pathways include the corticospinal tract (motor function), the dorsal column-medial lemniscus pathway (fine touch, vibration sensation, and proprioception), and the spinothalamic tract (pain, temperature, itch, and crude touch).
Brainstem
Spinal cord
Forebrain
Retina
Hindbrain
Barrel cortex
Sensory cortex
Midbrain reticular formation