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Respiratory System

Review and Quiz

pharynx the junction in the throat of the alimentary canal and the trachea.
epiglottis A flap of tissue that covers the trachea during swallowing, preventing food from entering the lungs.
larynx The voicebox; contains the vocal cords.
trachea The tube between the larynx and bronchi through which air travels to the lungs; also called the windpipe.
bronchus One of two tubes connecting the trachea to each lung.
lung An organ in the respiratory system consisting of sponge-like tissue that exchanges oxygen and carbon dioxide wight he blood.
bronchiole A thin tube that branches from a bronchus within a lung.
alveolus One of millions of tiny air sacs within the lungs where gas exchange occurs.
diaphragm A sheet of muscle that forms the bottom wall of the chest cavity; It contracts during inhaling and relaxes during exhaling.
emphysema A respiratory disease in which alveoli lose their elasticity, leading to difficulty in breathing.
regulation of breathing Breathing is regulated by the amount of carbon dioxide in the blood.
nicotine The chemical that makes tobacco addictive.
Created by: Shelly Sinclair