Cytoplasm. The cytoplasm is the part of the cell which does all the work. Different cells do different jobs, however whatever the job is it will require energy in the form of a chemical called ATP. This energy containing chemical is produced by tiny organelles in the cell called mitochondria. Muscle cells contain two very special chemicals called actin and myosin.
Definition of TREPHINATION. : an act or instance of perforating the skull with a surgical instrument. ADVERTISEMENT.efinition of TREPHINATION. : an act or instance of perforating the skull with a surgical instrument. ADVERTISEMENT.
Disc Degeneration, Nerve Impingement, and Stenosis in the Cervical Spine Nerve impingement is a condition in which abnormal pressure is placed on the nerves in the cervical spine [neck]and is often related to degeneration of the discs.he first type of stenosis consists of symptoms in the neck and arms only caused by bone spurs on the nerve root. These patients are treated similarly to the patients with a cervical disc herniation.The second type of patient has symptoms from bone spurs squeezing the spinal cord itself.