Properly, soil pipe is any pipe through which the waste from a water closet passes, and waste pipe is any pipe receiving waste from any fixture or group of fixtures other than the water closet.
Both of the vertebral arteries ascend through the spinal column and enter the brain through the magnum foramen. Once in the brain, they continue to ascend, traveling beside the brain stem. At the lower border of the pons the two vertebral arteries join together to form the basilar artery or vertebro-basilar artery.ne exception to this pattern is alternating hemiplegia. This is a paralysis that can be caused by ischemic stroke and affects different structures on each side of the body. It results from a brain stem lesion that damages cranial nerve nuclei and one side of the pyramidal tract in the same area.
Damage to the pons will result in a range of effects on sleep. For example, damage to certain parts of the pons can put a person into a semi-permanent sleep-like state.