1,3- DIPHENYLGUANIDINE ; 1,3-DIPHENYLGUANIDINE ; Accelerator D ; DENAX ; DFG ; Diphenyl guanidine ; Diphenylguanidine ; DPG ; EKALAND DPG ; GUANIDINE, 1,3-DIPHENYL -;MELANILINE ; GUANIDINE, 1,3-DIPHENYL- GUANIDINE, N,N'-DIPHENYL- KUMAC D ; MELANILINE ; MIXLAND+ DPG ; N,N'-DIPHENYLGUANIDIN ; N,N'-Diphenylguanidine ; Nocceler D ; Rubator DPG ; SYM-DIPHENYLGUANIDINE ; USAF B-19
The brain stem is the bottom-most portion of the brain, connecting the cerebrum with the spinal cord. The midbrain, pons, medulla oblongata, and reticular formation are all part of the brain stem. The midbrain is the short portion of the brain stem between the pons and the cerebral hemispheres. The top of the midbrain is called the tectum (or tectal area). The third and fourth cranial nerves originate in the midbrain.
The two main parts of the brain stem are the pons and the medulla. The pons contains nerve fibers that connect the cerebral cortex with the cerebellum and the spinal cord. The pons controls sleep, awakening, and dream onset. The medulla controls heart rate, respiration, and blood pressure.