What carries air from trachea to lungs?

What are the smallest branches of bronchi located in the lungs?

What is the process where cell uses oxygen and nutrients to produce energy, water, and CO2?

What is the tiny, hair-like structures found in the nasal cavities that help filter the air brought in by nose?

What closes the opening into the larynx during swallowing which prevents food/water from entering respiratory tract?

What happens when the diaphragm and intercostal muscles relax?

What is The exchange of oxygen and carbon dioxide between lungs and bloodstream?

What is the Exchange of oxygen and carbon dioxide between tissue cells and bloodstream?

What contains vocal cords?

What is the large organ that helps circulate oxygen and release carbon dioxide?

What is the 2 hollow spaces in the nose that are lined with mucous membrane and have a rich blood supply?

What is the Wall of cartilage that divides the nose into 2 hollow spaces?

What is a part of the respiratory system that has 2 openings called nostrils that take in air?

What lies directly behind nasal cavities and divided into 3 sections?

What is the small membrane that enclose heart and lungs?

What system is responsible for taking in oxygen which is needed by all cells?

What are the Cavities in the skull that surround the nasal area?

What tube extends from larynx to center of the chest?

What is the process of breathing?