The voice box is also known as the larynx. What can the larynx actually do? This can allow air to go into the respiratory organs so that a gas exchange can be possible. This is also the organ that is highly responsible for providing the vocal sounds that are produced by the body so that they can become heard better.
There are some people who do not realize this but this is very tough. This is also very flexible which means that it will be able to do movements that will help air pass through without any issues. This is known to be a guard of the other lower respiratory system parts.