17 terms

Respiratory System

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respiration
the process of obtaining and using oxygen in the body
diaphragm
a sheet of muscle below the chest cavity that helps control breathing
trachea
a stiff tube lined with cartilage that transports air between the throat and lungs
mucus
a sticky fluid that traps and prevents foreign particles from entering the body
cilia
small hairlike structures that move small particles of dirt out of the respiratory system
diffusion
the process by which a substance such as gas moves from areas of high concentration to areas of low concentration
alveoli
tiny air sacs at the end of each bronchiole; look like tiny grape clusters
What exchanges carbon dioxide for air?
alveoli
What 2 main muscles controls breathing?
lungs and diaphragm
epiglottis
controls were the food and oxygen go [like a traffic cop]
What controls your breathing automatically?
your brain
What percent of the air we breath is nitrogen?
78%
What percent of the air we breath is oxygen?
21 %
Who has a larger larynx and vocal cords men or women?
men
What does deep breathing and yawning help get rid of?
carbon dioxide
allergies and asthma cause airways to do what?
narrow
What do you need to turn food into energy?
oxygen