Surfactant: A fluid secreted by the cells of the alveoli (the tiny air sacs in the lungs) that serves to reduce the surface tension of pulmonary fluids; surfactant contributes to the elastic properties of pulmonary tissue, preventing the alveoli from collapsing.urfactant: A fluid secreted by the cells of the alveoli (the tiny air sacs in the lungs) that serves to reduce the surface tension of pulmonary fluids; surfactant contributes to the elastic properties of pulmonary tissue, preventing the alveoli from collapsing.
Guy Fawkes' Day is not a public holiday. Businesses, organizations and schools are open as usual. Public transport services run to their normal timetables. Some organizations, communities and municipalities may organize public bonfires or displays of fireworks on or around November 5.
Spring Break Friday, March 16, 2018 Memorial Day Monday, May 28, 2018 Independence Day Wednesday, July 4, 2018 The number of annual holidays is determined by statute. A state employee is entitled to observe Yom Kippur, Cesar Chavez Day or Good Friday in lieu of any holiday or holidays on which the employeeâs agency is required to be open and staffed to conduct public business.