This type of coma is usually reversible once the blood sugar is corrected. Oxygen deprivation: Oxygen is essential for brain function. Cardiac arrest causes a sudden cutoff of blood flow and oxygen to the brain, called hypoxia or anoxia.
The external power supply is the AC power adapter that converts household AC electricity voltages to the much lower DC voltages needed to charge a mobile phone's internal battery.
external definition: The definition of external refers to something or someone that is outside or the outside walls of a space or something that is applied outside. (adjective) An example of external is a tornado or some other force that can destroy y...