A Tour of Your Respiratory System Crossword

Air sacs of the lungs
Process of inhaling and exhaling air.
Largest branch of the bronchial tree between the trachea and bronchioles.
Entire system of air passageways within the lungs formed by the branching of bronchial tubes.
Smallest of the air passageways within the lungs.
Flaplike piece of tissue at the top of the larynx that covers its opening when swallowing is occurring.
Muscular tube connecting the pharynx and stomach.
Also known as expiration, the movement of air out of the lungs.
Opening of the larynx between the vocal cords.
Iron-containing protein pigment in red blood cells that can combine with oxygen andcarbon dioxide.
Also known as inspiration, the movement of air into the lungs.
Organ between the pharynx and trachea that contains the vocal cords.
Paired breathing organs.
Air cavity in the skull through which air passes from the nostrils to the upper part of the pharynx.
Vertical plate made of bone and cartilage that divides the nasal cavity.
Part of the human face that contains the nostrils and organs of smell and forms the beginning of the respiratory tract.
Either of the two external openings of the nose.
Short, muscular tube extending from the mouth and nasal cavities to the trachea and esophagus.
Membrane sac covering and protecting each lung
Exchange of gases (oxygen and carbon dioxide) between living cells and the environment.
Also known as the windpipe, the respiratory tube extending from the larynx to the bronchi.