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Respiratory System

Across
a large membranous tube reinforced by rings of cartilage, extending from the larynx to the bronchial tubes and conveying air to and from the lungs; the windpipe
Smallest of the air passageways within the lungs.
a flap of cartilage at the root of the tongue, which is depressed during swallowing to cover the opening of the windpipe.
the hollow muscular organ forming an air passage to the lungs and holding the vocal cords in humans and other mammals; the voice box.
Air-filled chambers in the bones of the skull that open into the nasal cavity.
the serous membranes associated with the lungs
Also known as inspiration, the movement of air into the lungs.
Muscular tube connecting the pharynx and stomach.
air that occupies the space between the mouth and alveoli but that does not actually reach the area of gas exchange
Down
Also known as expiration, the movement of air out of the lungs.
Either of the two external openings of the nose.
any of several thin, scroll-shaped bony elements forming the upper chambers of the nasal cavities.
the bodily process of inhalation & exhalation
the membrane-lined cavity behind the nose and mouth, connecting them to the esophagus.
Process of inhaling and exhaling air.
any of the major air passages of the lungs that diverge from the windpipe.
Iron-containing protein pigment in red blood cells that can combine with oxygen and carbon dioxide.
any of the many tiny air sacs of the lungs which allow for rapid gaseous exchange.
each of the pair of organs situated within the rib cage, consisting of elastic sacs with branching passages into which air is drawn, so that oxygen can pass into the blood and carbon dioxide be removed.
separates the thoracic cavity, containing the heart and lungs, from the abdominal cavity.