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Respiratory System
Mrs. S Young
12
Science
7th Grade
01/14/2009

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Term
respiratory System
Definition
system that takes in oxygen and gives off carbon dioxide in order to supply the body with O2
Term
respiration
Definition
the process by which oxygen and glucose undergo a complex series of chemical reactions inside cells
Term
nose
Definition
the organ of smell, and entrance to the respiratory tract
Term
cilia
Definition
tiny hairlike extensions of cells that can move together like whips
Term
pharynx
Definition
the throat; part of both the respiratory and digestive systems
Term
larynx
Definition
the voice box, located in the top part of the trachea, underneath the epiglottis
Term
vocal cords
Definition
folds of connective tissue that stretch across the opening of the larynx and produce a person's voice
Term
trachea
Definition
the windpipe; a passage through which air moves in the respiratory system
Term
bronchi
Definition
the passages that branch from the trachea and direct air into the lungs
Term
lungs
Definition
the main organs of the respiratory system
Term
alveoli
Definition
tiny sacs of lung tissue specialized for the movement of gases between the air and blood
Term
diaphragm
Definition
a large, dome-shaped muscle that plays an important role in breathing
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