Quick Answer. The function of the cartilaginous rings of the trachea is to stabilize the trachea and keep it rigid while allowing the trachea to expand and lengthen when the person breathes. If the trachea was not supported in this way, it would simply collapse because of the pressure of the chest.
1 The Pill. The pill is the common name for oral contraception. It's one of the safest, most effective, and popular methods of birth control. The pill is made up of synthetic forms of hormones that naturally occur in a female's body - progestin and estrogen.
If you answer yes, you might be thinking about permanent birth control, also called sterilization. Sterilization can be done for women or men. For women, it is often called âgetting your tubes tiedâ or âtubal ligation.â For men, it is called a vasectomy. Sterilization is a very common type of birth control. In fact, in the United States, sterilization is the most common form of birth control with 23% of all couples relying on it.