Mitochondrial disease is a group of disorders caused by dysfunctional mitochondria, the organelles that generate energy for the cell.itochondrial diseases are sometimes (about 15% of the time) caused by mutations in the mitochondrial DNA that affect mitochondrial function.
1 Surface-mounted light â the finished housing is exposed, not flush with surface. 2  Chandelier. 3  Pendant light â suspended from the ceiling with a chain or pipe.  Sconce â provide up or down lights; can be used to illuminate artwork, architectural details; commonly used in hallways or as an alternative to overhead lighting.
Over a table. The recommended height to hang a pendant above a table is 28 to 32 inches, but the fixture can be hung slightly higher or lower depending on personal preference, fixture size and ceiling height.ver the foot of the bed. Another location that can be enhanced by hanging a pendant fixture is above the foot of a bed. How low to hang a fixture in this situation will be guided by the ceiling height as well as the size of the bed and fixture.