Vocabulary chap 12

lympatic tissue in the nasopharynx; pharyngeal tonsils.

air sac in the lung

tip or uppermost portion of the lung. An apex is the tip of a structure. apical means pertaining to or at the apex.

lower portion of the lung; from the greek basis, foundation. Basilar means pertaining to the base.

smallest branches of the bronchi. Terminal bronchioles lead to alveolar ducts.

branch of the trachea (windpipe) that is a passageway into the lung; bronchial tube.

gas produced by body cells when oxygen and food combine; exhaled through the lungs.

thin hairs attached to the mucous membrane epithelium lining the respiratory tract. they clear bacteria and foreign substances

Muscle seperating the chest and abdomen. It contracts and relaxes to make breathing possible.

Lid-like piece of cartilage that covers the larynx, preventing food from entering the larynx and trachea during swallowing.

breathing out

slit-like opening to the larynx

midline region where the bronchi, blood vessels, and berves enter and exit the lungs. Hilar means pertaining to or at top of hilum

breathing in

voice box; containing the vocal cords.

division of a lung

region between the lungs in the chest cavity. It contains the trachea, heart, aorta, wsophagus, and bronchial tubes

openings through the nose carrying air into the nasal cavities

gas that passes into the bloodstream at the lungs and travels to all body cells.

one of a pair of almond-shaped masses of lymphatic