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.
A tracheostomy is a surgical procedure that involves making a cut in the trachea (windpipe) and inserting a tube into the opening. A tracheostomy may be temporary or permanent, depending on the reason for its use. Certain groups, including babies, smokers and the elderly, are more vulnerable to complications.