Alveoli
(singular alveolus.) Tiny sacs, with walls only a single cell
layer thick found at the end of the respiratory bronchiole
tree. Alveoli are the site of gas exchange in the respiratory
system.
Breathing
Inhaling and exhaling
Bronchi
Airways in the lungs that lead from
the trachea to the bronchioles.
Bronchiole
Airways in the lungs that lead
from the bronchi to the alveoli.
Cilia
Fine hair-like projections that line the
respiratory tract, and move in rhythmic
unison to remove foreign particles.
Diaphragm
Large, flat muscle at the bottom of the
chest cavity that helps with breathing
Epiglottis
A flap of tissue that seals off the windpipe
and prevents food from entering.
Larynx
"Voicebox", found just below the point where
the pharynx splits into the trachea and
esophagus.
Lungs
pair of spongy organs of respiration
in which blood is aerated
Mucus
Thick, sticky fluid that coats many parts
of the lungs to trap foreign particles.
Nose
Primary passageway into and
out of the respiratory system.
Pharynx
Connects nasal and oral cavities
with the larynx and esophagus
Pleura
Membrane surrounding the
lungs
Pulmonary Circulation
Flow of blood through the heart to
the lungs and back to the heart
Respiration
Entire process by which the body obtains and
uses oxygen and gets rid of carbon dioxide
and water.
Trachea
Air passageway; has cartilage rings to help
keep the air passage open as air rushes in;
branches into right/left bronchus