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 crying (also known as controlled comforting and sleep training) is a technique that is widely used as a way of managing parentsâ perceptions of sleep problems in infants and young children who do not settle alone or who wake at night.he Background to the AAIMHIâs Concerns On Controlled Crying. AAIMHI is concerned that the widely practiced technique of controlled crying is not consistent with infantsâ and toddlersâ needs for optimal emotional and psychological health and may have unintended negative consequences.