Which of the following statements about blood pressure is TRUE?
A. Two distinct pressures can be obtained when only a sphygmomanometer is used.
B. The diastolic pressure represents the pressure exerted against a venous wall during contraction of the left ventricle.
C. The greater the vasoconstriction, the greater the resistance and the higher the systolic pressure.
D. The systolic pressure represents the pressure exerted agains an arterial wall during relaxation of the left ventricle.
Answer: C. The greater the vasoconstriction, the greater the resistance and the higher the systolic pressure.
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