Chapter 12 Vocab Flashcards
adenoids
lymphatic tissue in the nasopharynx
aveolus
air lac in the lung
apex of the lung
tip or uppermost portion of the lung
base of the lung
lower portion of the lung
bronchioles
smallest branches of the bronchi; lead to alveolar ducts
bronchus
branch of the trachea that is a passageway into the lung; bronchial tube
carbon dioxide (CO2)
gas expelled by body cells when oxygen and carbon atoms from food combine; exhaled through lungs
cilia
thin hairs attached to the mucous membrane lining the respiratory tract; clear bacteria from lung
diaphragm
muscle separating chest and abdomen; contracts to pull air into lung, relaxes to push air out
epiglottis
lid-like piece of cartilage that covers the larynx; prevents food from entering
expiration
breathing out; exhalation
glottis
slit-like opening to the larynx
hilum of the lung
middle region; bronchi, blood vessels and nerves enter and exit
inspiration
breathing in; inhalation
larynx
voice box; contains vocal cords
lobe
division of a lung
mediastinum
region between lungs in the chest cavity; contains trachea, heart, lymph nodes, aorta, esophagus, bronchus
nares
openings through the nose carrying air into nasal cavities
oxygen (O2)
gas that makes up 21% of air; passes into the bloodstream at the lungs and travels to all cells
palatine tonsil
almond shapes mass of lymphatic tissue in the oropharynx
paranasal sinus
one of the air cavities in the bones near the nose
parietal pleura
outer layer of pleura lying closer to the ribs and chest wall
pharynx
throat; including the nasopharynx, oropharynx and laryngopharynx
plerua
double-layered membrane surrounding each lung
plural cavity
space between the folds of the pleura
pulmonary parenchyma
essential parts of the lung, responsible for respiration; bronchioles and alveoli
respiration
process of moving air into and out of the lungs; breathing
trachea
windpipe
visceral pleura
inner layer of the pleura lying closer to the lung tissue
