★ Circulatory and Respiratory System Quiz
Vocal chords are two folds of tissue that stretch across this organ, allowing you to talk. Your vocal cords are in your _______________.
A. trachea
B. bronchi
C. larynx
D. alveoli
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__________________ rush to the site of a cut and produce ____________, which forms a protective covering over the cut.
A. platelets, fibrin
B. plasma, white blood cells
C. red blood cells, hemoglobin
D. white blood cells, fibrin
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