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.
Birth control pills (commonly known as âthe pillâ) are a very popular form of oral contraception which is taken by millions of women everywhere. The main reason for this is their ease of use and convenience but like any form of medication they are not without their side effects, one of these being hair loss.