Allows you to talk and to smell. 9 What are the 5 main functions of the respiratory system. Respiratory System Structure Parts Function How To Relief Human Respiratory System Respiratory Respiratory System Cilia filters particles that enter the nose and air passages. . The airways lungs and respiratory muscles form the respiratory system. 8 Which of the following is part of both the respiratory and digestive systems. The primary organs of the respiratory system are the lungs which carry out this exchange of gases as we breathe. The respiratory system is the system in the human body that enables us to breathe. Allows you to talk and to smell. The primary function of the respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. Gases exchanged are oxygen and carbon dioxide. The human respiratory system is a series of organs responsible for taking