Name _________________. Overview. In this activity, you will study the effects of gravity on the planets of the Solar System. First, you need to view movies from the lunar Apollo missions, then calculate your weight on other planets. Finally, you will propose your weight on newly discovered planets around other stars.
A tracheostomy is an opening cut into the windpipe, or trachea. It is used as an airway for breathing. After the opening is made, a small tube is inserted to let air in, and to attach a breathing machine (mechanical ventilator) if needed.
Tracheostomy Tracheostomy (sometimes called tracheotomy) is the creation of an opening directly into the trachea (windpipe) in the neck for the purpose of assisting breathing. While tracheotomy used to be done as an emergency, it is now done more on an elective basis to protect the airway, better clean the airway and to provide more oxygen to the lungs.