Vocab Flashcards
Adenoids
Lymphatic tissue in the nasopharynx; pharyngeal tonsils
Alveolus (plural: alveoli)
Air sac in the lung
Apex of the lung
Tip or uppermost portion of the lung
Base of the lung
The lower portion of the lung
Bronchioles
The smallest branches of the bronchi
Bronchus (plural: bronchi)
The branch of the trachea (windpipe) that is a passageway into the lung; bronchial tube
Carbon dioxide (CO2)
Gas produced by body cells when oxygen and carbon atoms from food combine; exhaled through the lungs
Cilia
Thin hairs attached to mucous membrane epithelium, lining the respiratory tract
Diaphragm
Muscle separating the chest and abdomen; contracts to pull air into lungs, relaxes to push air out
Epiglottis
Lid-like piece of cartilage that covers the larynx; keeps food from entering the larynx and trachea during swallowing
Expiration
Breathing out (exhalation)
Glottis
Slit-like opening to the larynx
Hilum (of lung)
Midline region where the bronchi, blood vessels, and nerves enter and exit the lungs
Inspiration
Breathing in (inhalation)
Larynx
Voice box; contains the vocal cords
Lobe
Division of a lung
Mediastinum
The region between lungs in the chest cavity; contains the trachea, heart, lymph nodes, aorta, esophagus, and bronchial tubes
Nares
Openings through the nose carrying air into the nasal cavities
Oxygen
Gas that makes up 21% of air; passes into the bloodstream at the lungs and travels to all body cells
Palatine tonsil
One of a pair of almond-shaped masses of lymphatic tissue in the oropharynx
Paranasal sinus
One of the air cavities in the bones near the nose
Parietal pleura
Outer fold of pleura lying closer to the ribs and chest wall
Pharynx
The throat; including the nasopharynx, oropharynx, and laryngopharynx
Pleura
Double-folded membrane surrounding each lung
Pleura cavity
Space between the folds of the pleura
Pulmonary parenchyma
Essential parts of the lung, responsible for respiration; bronchioles and alveoli
Respiration
The process of moving air into and out of the lungs; breathing
Trachea
Windpipe
Visceral pleura
Inner fold of pleura lying closer to the lung tissue
