Ven'tri cles. The two chambers of the heart that receive blood from the auricles and force it into the arteries.
V. Relating to the Respiratory System and Organs of Excretion
Al ve'o li (ăl vē'o lī). (Plural of alveolus). Air cells. The cells, or cavities, that line the air passages and air sacs at the ends of the bronchial tubes.
Breath. Air taken in or sent out in respiration; that breathed out containing carbon dioxid, watery vapor, and various impurities.
Bron'chi (brǒn'kī). (Plural of bronchus). The two main branches of the trachea. These branch into numerous smaller branches, called the bron'chi al tubes.
Car'bon di ox'id. A gas formed of carbon and oxygen; colorless and odorless; has a somewhat acid taste, and is used for aerating soda water and other beverages; is present naturally in mineral and spring waters. It is present largely in the fissures of the earth and makes the choke-damp of mines. Called also car bon'ic acid.
Ep i glot'tis. The valve-like cover that prevents food and drink from entering the larynx.
Ex cre'tion. A waste substance thrown out, or rejected, from the system; for example, carbon dioxid, sweat, ur'ine, the fe'ces.
Lar'ynx. The enlargement of the windpipe, near its upper end, across which are stretched the vocal cords.