How does the mouth function in the respiratory system?

The mouth, also known as the oral cavity, is the secondary external opening for the respiratory tract. Most normal breathing takes place through the nasal cavity, but the oral cavity can be used to supplement or replace the nasal cavity's functions when needed. read more

The mouth functions as a backup system for the respiratory system. During quiet breathing, humans normally breath through the nose. The nose and inside it is kind of like an air conditioner and filter. read more

Anatomy of Respiratory System: Organs and Functions The three major parts of the respiratory system all work together to carry out their task. The airways (nose, mouth, pharynx, larynx etc.) allow air to enter the body and into the lungs. read more

What are the Primary Functions of the Respiratory System Being one of the major biological systems, it serves a number of purposes in the human body, with three of its main functions being: Gas Exchange – A vital life-sustaining process where we inhale oxygen (O 2) and exhale carbon dioxide (CO 2) [1, 2]. read more