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.
Several volcanoes in Central America are currently active, including Arenal, Turrialba, Irazu, IrazÃº poas PoÃ¡s In; Costa Rica, Cerro Negro, San cristobal CristÃ³bal; Concepcion concepciÃ³n In Nicaragua, Chaparrastique or San Miguel, Ilamatepec or Santa Ana; Izalco In / El, Salvador, Santa maria Santiaguito. pacaya fuego in guatemalahis volcanic arc, which has a length of 1,500 kilometres (930 mi), is formed by an active subduction zone along the western boundary of the Caribbean Plate.