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.
Vital Capacity (VC): Vital capacity is the total usable volume of the lungs which is under voluntary control. This value does not include the entire lung volume as it is not possible to breath all of the air out of the lungs. Total Lung Capacity (TLC): The residual volume (air you cannot expire) + vital capacity (total volume available for use) = total lung capacity.