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.
Care After Surgery. 1  It is very important to keep the tracheostomy clear of secretions. 2  The tracheostomy tube has a double lumen (a tube within a tube) made of plastic. The inner tube may be removed for cleaning. 3  The air going through the tracheostomy is humidified to prevent the trachea from drying up.