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ducts formed from divisions if the respiratory bronchioles in the lower airway; each ducts ends in clusters known as alveoli.
the very thin membrane, consisting of only one cell layer, that lies between the alveolus and capillary, through which respiratory exchange between the alveolus and the blood vessels occurs.
arteries that branch off of the thoracic aorta and supply the lung tissues with blood.
the projection of the lowest portion of tracheal cartilage, at the level of the fifth thoracic vertebra.
chronic inflammatory condition affecting the bronchi that is associated with excess mucus production that results from overgrowth of the mucous glands in the airway.
chronic obstructive pulmonary disease (COPD)
a progressive and irreversible disease of the airway marked by decreased inspiratory and expiratory capacity of the lungs.
forced expiratory vital capacity (FEVI)
the volume of air exhaled from the lung following a forceful exhalation.
the opening into the lower airway made up of the true vocal cords and the opening between them.
the opening of the lower airway, which consists of several cartilaginous structures held together by ligaments.
a small portion of the left lung that is the equivalent of the middle lobe in the right lung.
the part of the lower airway below the larynx through which air enters the lungs.
membranes of connective tissue that cover the lungs and line the inner borders of the rib cage.
primary respiratory acidosis
the decrease in the blood pH secondary to insufficient exhalation of CO2.
the volume of air remaining in the respiratory passages and lungs after a forceful expiration.
the part of the brain located in the medulla oblongata that controls the respiratory stimulus.
the organs and structures associated with breathing, gas exchange, and the entrance of air into the body.
restrictive lung disease
diseases such as black lung disease and asbestosis that result in stiffening of the lungs and significantly decreased vital capacity.
airway passages in the ungs that are formed from the division of the right and left mainstream bronchi.
a device used in pulmonary function testing that measures air leaving the lungs over a specific period of time.
airway passages in the lungs that are formed from branching of the secondary bronchi.
the structure made up of cartilage and other connective tissue that lies immediately inerior to the larynx and conveys air to the mainstream bronchi.
a set on bony convolutions formed by the conchae in the nasopharynx that help to maintain smooth airflow.
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