Examples of homeostasis include the regulation of body temperature, the pH of extracellular fluid, or the concentrations of sodium, potassium and calcium ions as well as that of glucose in the blood plasma, despite changes in the environment, diet, or level of activity.
DEFINITION of 'White Collar'. A working class that is known for earning high average salaries and not performing manual labor at their jobs. White collar workers historically have been the shirt and tie set, defined by office jobs and not getting their hands dirty (or their white collar dress shirts). This class of worker stands in contrast to blue collar workers, who traditionally wore blue shirts and worked in plants, mills and factories. Next Up.
Collar (clothing) In clothing, a collar is the part of a shirt, dress, coat or blouse that fastens around or frames the neck. Among clothing construction professionals, a collar is differentiated from other necklines such as revers and lapels, by being made from a separate piece of fabric, rather than a folded or cut part of the same piece of fabric used for the main body of the garment. A collar may be permanently attached to the main body of the garment or detachable.