Which is the best definition of blood pressure?
A. The force exerted by blood against the blood vessel wall.
B. the pressure in the arteries when the ventricles are contracting
C. the pressure in the arteries when the ventricles are relaxing
D. the distance the blood is from the heart
Preview next quiz:
An increase in the concentration of carbon dioxide in the blood will stimulate what to happen?
A. the muscles to work harder
B. your breathing rate to increase
C. your heart to beat faster ( sympathetic nervous system)
D. your blood pressure to increase
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