Breathing is then done through the tube, bypassing the mouth, nose, and throat. A tracheostomy is commonly referred to as a stoma. This is the name for the hole in the neck that the tube passes through.
A millimeter (mm) is the smallest. In order from smallest to largest they rank millimeter, centimeter (cm), decimeter (dm), and meter (m). These are all common units of length in the metric system.
Most of the world uses the metric system. The only countries not on this system are the U.S., Myanmar, and Liberia. The metric system is based on 10s. For example, 10 decimeters make a meter (39.37 inches).Units smaller than a meter have Latin prefixes: 1  Deci-means 10; 10 decimeters make a meter.he metric system is based on 10s. For example, 10 decimeters make a meter (39.37 inches). Units smaller than a meter have Latin prefixes: 1  Deci-means 10; 10 decimeters make a meter.