Respiratory System Vocab Flashcards
(155 cards)
What are adenoids?
Lymphatic tissue in the nasopharynx.
What is an alveolus?
Air sac in the lung.
Plural: alveoli
What is the apex of the lung?
Tip or uppermost portion of the lung. Apical means pertaining to or located at the apex.
What is the base of the lung?
Lower portion of the lung; from the Greek basis, foundation. Basilar means located at or in the base.
What are bronchioles?
Smallest branches of the bronchi. Terminal bronchioles lead to alveolar ducts.
What is a bronchus?
Branch of the trachea (windpipe) that is a passageway into the lung.
Plural: bronchi
What is carbon dioxide?
Gas produced by body cells when oxygen and carbon atoms from food combine; exhaled through the lungs.
Abbreviation: CO2
What are cilia?
Thin hairs attached to the mucous membrane epithelium lining the respiratory tract. They clear bacteria and foreign substances from the lung.
What is the diaphragm?
Muscle separating the chest and abdomen. It contracts to pull air into the lungs and relaxes to push air out.
What is the epiglottis?
Lid-like piece of cartilage that covers the larynx, preventing food from entering the larynx and trachea during swallowing.
What is exhalation?
Breathing out; expiration.
What is the glottis?
Slit-like opening to the larynx.
What is the hilum of the lung?
Midline region where the bronchi, blood vessels, and nerves enter and exit the lungs. Hilar means pertaining to (at) the hilum
What is inhalation?
Breathing in; inspiration.
What is the larynx?
Voice box; containing the vocal cords.
What is a lobe?
Division of a lung.
What is the mediastinum?
Region between the lungs in the chest cavity. It contains the trachea, heart, lymph nodes, major blood vessels, esophagus, and bronchial tubes.
What are nares?
Openings through the nose carrying air into the nasal cavities; nostrils.
What is oxygen?
Gas that makes up 21 percent of the air that we breathe. It passes into the bloodstream at the lungs and travels to all body cells.
Abbreviation: O2
What is the palatine tonsil?
One of a pair of almond-shaped masses of lymphatic tissue in the oropharynx.
What is a paranasal sinus?
One of the air cavities in the bones near the nose.
What is the parietal pleura?
Outer layer of pleura lying closer to the ribs and chest wall.
What is the pharynx?
Throat; including the nasopharynx, oropharynx, and laryngopharynx.
What is the pleura?
Double-layered membrane surrounding each lung.