In Bodies of Water. The Volga River of western Russia starts in the Valdai Hills northwest of Moscow and flows about 3,701 km (2,300 mi) generally east and south to the Caspian Sea.  The Volg â¦ a River flows in the eastward direction. 11 people found this useful.he Volga River of western Russia starts in the Valdai Hills northwest of Moscow and flows about 3,701 km (2,300 mi) generally east and south to the Caspian Sea.   The Volg â¦ a River flows in the eastward direction. 11 people found this useful.
Posterior pharyngeal pulsion (Zenker's) diverticulum: Zenker called this pulsion diverticula. Earlier foreign body impaction was attributed as a cause of this diverticulum. Killian attributed spasmodic contraction of the circular fibers at the upper end of the esophagus.efinition: Pharyngeal pouches are mainly acquired and rarely congenital diverticula in and around the pharynx and oesophagus. These diverticula are nothing but circumscribed pouches caused by a protrusion of mucosa through a preexisting weakness / opening in the muscle layers of pharynx / oesophagus.
Other causes. Other types of demyelinating disease and their causes include: Optic neuritis â inflammation of the optic nerve in one or both eyes. Neuromyelitis optica (Devicâs disease) â inflammation and demyelination of the central nervous system, especially of the optic nerve and spinal cord. Transverse myelitis â inflammation of the spinal cord.