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.
by Damon Huss. Today, we celebrate the Fourth of July with fireworks, parades, banquets, and barbeques. It is a holiday, a day to take a break from school or work and our day-to-day life to commemorate the adoption of the Declaration of Independence on July 4, 1776.Surely there were fireworks on that dramatic date in history, too.t is a holiday, a day to take a break from school or work and our day-to-day life to commemorate the adoption of the Declaration of Independence on July 4, 1776. Surely there were fireworks on that dramatic date in history, too.