These include the nose, pharynx, larynx, trachea, bronchi and lungs. The respiratory system does two very important things it brings oxygen into our bo.s, which we need for our cells to live and function properly and it helps us get rid of carbon dioxide, which is a waste product of cellular function..Upper respiratory tract This includes the nose, mouth, and the beginning of the trachea the section that takes air in and lets it out . Lower respiratory tract This includes the trachea, the bronchi, broncheoli and the lungs the act of breathing takes place in this part of the system ..
study of how the human body functions, includes the mechanical, physical, bioelectrical, and biochemical functions of humans in good health, from organs to the cells of which they are composed
