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1020 Unit 6
Unit 6
13
Biology
Undergraduate 1
04/06/2009

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Term
alveoli
Definition
tiny air sacs at the ends of the bronchioles in the lungs
Term
bronchi
Definition
tubes branching from the trachea and directing air into each lung
Term
brionchioles
Definition
tubes from the bronchi that lead to clusters of alveoli
Term
diaphram
Definition
muscle sheet at bottom of chest cavity; contraction of this muscle draws air into lungs
Term
ectotherm
Definition
organism who body temperature is determined by the environment temp.
Term
endosperm
Definition
food source for developing plant embryos
Term
endotherm
Definition
organism who body temperature is maintained independent of environmental temp.
Term
epiglottis
Definition
flap at the tap of the trachea that prevents food from entering or blocking air pathway
Term
metabolism
Definition
the collection of chemical reactions that occur in organisms
Term
spiracle
Definition
opening in arthropod body wall through which air enters trachea
Term
thermal strategy
Definition
metabolic patterns of organisms
Term
trachea
Definition
air tube leading from back of mouth down into chest cavity the "windpipe"
Term
tracheae
Definition
tiny tubes in insect body that deliver oxygen direclty to metabolizing tissues
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