coelom. coelom (sÄËlÉm) [ key ], fluid-filled body cavity, found in animals, which is lined by cells derived from mesoderm tissue in the embryo, and which provides for free, lubricated motion of the viscera.oelom. coelom (sÄËlÉm) [ key ], fluid-filled body cavity, found in animals, which is lined by cells derived from mesoderm tissue in the embryo, and which provides for free, lubricated motion of the viscera.
Facts You Should Know. ALS is not contagious. Although the life expectancy of a person with ALS averages about two to five years from the time of diagnosis, this disease is variable, and many people can live with the disease for five years and more. More than half of all people with ALS live more than three years after diagnosis.
1 Less than 1% of patients with ALS will have significant improvement in function lasting 12 months or more. 2  Approximately 6,400 people in the U.S. are diagnosed with ALS each year. 3  The incidence of ALS is two per 100,000 people, and it is estimated that more than 20,000 Americans may be living with ALS at any given time.