Exercising on a bicycle or treadmill during a stress test stresses the heart and requires more ________ for the heart muscle cells
a. helium
b. hydrogen
c. carbon dioxide
d. oxygen
d
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If done incorrectly, ________ techniques may feel violent or like taking a beating
Fill in the blank(s) with the appropriate word(s).
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What is another name for the shoulder blade?
A) Scapula B) Patella C) Clavicle D) Pharynx
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Heart valves serve what purpose?
A) They prevent oxygenated blood from flowing through the coronary arteries. B) They control the heart's electrical signals. C) They prevent blood from flowing forward. D) They prevent backflow of blood.
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Disinfectants do not always kill:
A) viruses B) fungi C) bacteria D) spores
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