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.
The neck is cleaned and draped. Surgical cuts are made to reveal the tough cartilage rings that form the outer wall of the trachea. The surgeon creates an opening into the trachea and inserts a tracheostomy tube.