Muscle wasting, also called muscle atrophy, is the weakening or loss of muscle tissue. Muscle wasting causes a significant decrease in muscle strength and the ability to move the muscle, according to MedlinePlus. In a healthy individual, muscle wasting can occur as result of the lack of physical exercise.
Primary Storage Device. Alternatively referred to as internal memory, main memory, and primary memory, a primary storage device is a medium that holds memory for short periods of time while a computer is running.
Tertiary storage or tertiary memory provides a third level of storage. Typically, it involves a robotic mechanism which will mount (insert) and dismount removable mass storage media into a storage device according to the system's demands; this data is often copied to secondary storage before use.