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.
The date of Honesty Day in 2017 is on Sunday, April 30th. If April 1st is a day to tell lies and pull pranks, April 30th (Honesty Day) is a time to come clean. The former press secretary of Maryland, M. Hirsh Goldberg, is credited with inventing this holiday in the 1990s. He wrote a book about lying, fibbing, scamming, and frauds.