The contractile vacuole acts to regulate quantity of water in a cell. In freshwater environments the concentration of solutes inside the cell is higher than outside the cell (i.e., the environment is hypotonic).he contraction of the contractile vacuole and the expulsion of water out of the cell is called systole. Water always flows first from outside the cell into the cytoplasm, and is only then moved from the cytoplasm into the contractile vacuole for expulsion.
Induced coma. A barbiturate-induced coma, or barb coma, is a temporary coma (a deep state of unconsciousness) brought on by a controlled dose of a barbiturate drug, usually pentobarbital or thiopental.
Controlled Area. A controlled area is the area outside of a restricted area but within the area whose access is limited by licensed operators. The access, occupancy, and working conditions are controlled for radiation protection purposes.ontrolled Area. A controlled area is the area outside of a restricted area but within the area whose access is limited by licensed operators. The access, occupancy, and working conditions are controlled for radiation protection purposes.