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7Sci CH16

7th Science CH16 Breathing

TermDefinition
alveoli thin-walled balloon-like sacs within your lungs
asthma lung disorder in which the bronchial tubes become constricted quickly; results in reduced flow of air to the lungs, shortness of breath, wheezing, and coughing; often an allergic or stress reaction
cellular respiration process in which your body gets energy to operate; oxygen from the respiratory systems combines with nutrients stored in your cells and releases energy, carbon dioxide,and water
cilia tiny hairlike structures lining your nasal passages, trachea, and lungs
cystic fibrosis lung disease that is passed genetically from parents to children; thick mucus blocks air passages of the respiratory system, causing lung damage, wheezing,and frequent lung infections
diaphragm thin sheet of muscle under your lungs
emphysema lung disease in which the air passageways or alveoli are no longer able to expand or contract; the lungs become scarred and less oxygen goes into the bloodstream, so the heart must work harder, often resulting in heart problems as well
gill main respiratory structures of most fish
hemoglobin oxygen-binding, iron-containing substance found in red blood cells
lung the main organ of your respiratory system
lung cancer cancer that causes the most deaths among men and women in the US
trachea an air-conducting tube; in humans, the windpipe