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 provides another way for oxygen-rich air to reach your lungs, besides going through your nose or mouth. A breathing tube, also called a trach (trake) tube, is put through the tracheostomy and directly into the windpipe to help you breathe. Doctors use tracheostomies for many reasons. One common reason is to help people who need to be on ventilators (VEN-til-a-tors) for more than a couple of weeks.