The Respiratory System

nose mouth larynx lung right bronchus diaphragm pharynx left bronchus bronchiole alveoli trachea Match the structure of the respiratory system with its function. Trachea Carries air to the lungs Larynx Produces our voice Alveoli Allows oxygen to move into the blood stream Lungs The essential organ of the respiratory system Diaphragm Muscle that helps to expand and contract the lungs Fill in the blanks. The gas that we breathe in is oxygen. The gas that we breathe out is carbon dioxide. We need oxygen to carry out the process of respiration so that we can generate energy.