Respiratory System
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a small containing sacs ; where gas exchange
alveolus
alteration of inhalation and exhalation
breathing
solution that maintains a constant pH
buffer
gas exchange, or breathing
respiration
it functions to supply all metabolically active cells in the body
respiration
bounded at the bottom by a sheet of muscle
diaphragm
warms, moistens, and filters air
nose/nasal cavity
passageway for air
pharynx
the voice box
larynx
lined with fine hairs called
cilia
filter air before it reaches the lungs
trachea
two branches at the end of the trachea
bronchi
a network of smaller branches
bronchioles
where gases exchange
alveoli
smoot out the basic rhythm of breathing set by the medulla
pons
control the center signal
medulla oblongata
how many alveoli do humans have
600 million
nasal congestion blocks the tiny openings
sinusitis
result of a viral infection
common cold
caused by several influenza viruses
influenza or flu
tonsils become inflamed and enlarged
tonsillitis
infection of the larynx
laryngitis
infection of the primary and secondary bronchi
bronchitis
bronchi and alveoli fill with pus and fluid
pneumonia