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