The second seat may be purchased for the same fare as the original seat, provided it is purchased at the same time. A customer who does not purchase an extra seat in advance may be required to do so on the day of departure for the fare level available on the day of departure.
Multiple Sclerosis. Multiple Sclerosis (MS) is a diseases of the central nervous system which leads to recurring attacks of neurological symptoms. Learn more about its causes, symptoms, diagnosis and treatment here. Cerebrovascular Disease. Cerebrovascular disease refers to disorders of the blood vessels that supply blood flow to the brain. Here is information about various cerebrovascular diseases including brain aneurysms and stroke.
The size of the nervous system ranges from a few hundred cells in the simplest worms, to around 300 billion cells in African elephants. The central nervous system functions to send signals from one cell to others, or from one part of the body to others and to receive feedback. Malfunction of the nervous system can occur as a result of genetic defects, physical damage due to trauma or toxicity, infection or simply of ageing.