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15 terms

Spencer Respiratory System

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Lungs
Site of gas exchange between the atmosphere and the blood
Epiglottis
Covers the opening to the trachea when food is being swallowed
Pharynx
Allows passage of both food and air (throat)
Larynx
Upper end of the trachea where sounds are produced (voice box)
Trachea
The tube air passes through from the pharynx (windpipe)
Alveoli
Cluster of tiny air sacs where oxygen diffuses into the blood and carbon dioxide diffuses out of the blood
Oxygen
Diffuses into the blood
Carbon dioxide
Diffuses out of the blood
Inspiration
Taking air into the lungs; ribs move outward and diaphragm puses down
Expiration
Expelling air form the lungs; rib muscles relax and diaphragm elevates
Breathing Rate
Controlled by the brain monitoring the levles of CO2 in the blood
Diaphragm
Muscle, Large, flat muscle at the bottom of the chest cavity that helps with breathing
Pleura
Lining around the lungs
Bronchial Tubes
Branches off the trachea
Function of the Respiratory System
Transport gases to and from the cardiovascular system