12 terms

Respiratory System

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Alveoli
small air sacs where the air that is breathed in goes
diaphragm
sheet-like muscle separating the chest from abdominal cavity; creates a change in pressure to expand lungs
bronchial tubes
two tubes at the end of the trachea, brings in air - one tube goes to the left lung, the other goes to the right.
exhale
to breathe out
inhale
to breathe in
larynx
voice box
lungs
two respiratory organs in the chest protected by the rib cage
nasal passages
nose - opening that allows inhaling & exhaling.
pharynx
throat - collects incoming air from nose and passes it to the trachea
respiration
inhaling and exhaling - breathing
trachea
windpipe - passage that filters air from pharynx to lungs.
Role of Respiratory System
deliver oxygen to the blood, remove carbon dioxide from the blood, and protect the body against disease causing organisms and toxins that are inhaled.