Focal muscular atrophy (FMA) has various causes and, hence, various signs and symptoms. 1  Muscle wasting is probably the presenting symptom when the onset is insidious (see images below). Weakness may not be a primary symptom in these patients. 2  Muscle weakness occurs when the onset is more abrupt.
Mexico) The Central America Volcanic Arc is a chain of volcanoes which extends parallel to the Pacific coast line of the Central American Isthmus, from Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica, and down to northern Panama.ince Central America is a major subduction zone, Nicaragua hosts most of the Central American Volcanic Arc. Seismograms are available on the Ineter webseite; for volcanoes check Volcano monitoring stations and Broadband stations. - For lots of interesting info and photos go to Xolo ! Nicaragua: MASAYA O-Web 5 min.
Another area with a great deal of cinder cone volcanoes is the Raton Clayton volcanic field located in the northeastern portion of New Mexico. This area has around 120 cinder cones that range from 2,300 years old to over a million.erro Negro. Cerro Negro is located in Nicaragua and is currently the youngest volcano in Central America. It was first created in April of 1850 and since then has been one of the most active in the country. This volcano is in a group of four cinder cone volcanoes located in the Maribios Range.