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 often needed when health problems require long-term use of a machine (ventilator) to help you breathe. In rare cases, an emergency tracheotomy is performed when your airway is suddenly blocked, such as after a traumatic injury to your face or neck. When a tracheostomy is no longer needed, it's allowed to heal shut or is surgically closed. For some people, a tracheostomy is permanent. Mayo Clinic's approach.