The discharge of type B baroreceptors in the atria:
A. leads to an increase in heart rate
B. none of the answers
C. is increased when venous return is decreased
D. occurs primarily during atrial systole
E. all of the answers
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Which of the following is true?
A. a vector that is perpendicular to the axis of the electrode causes no deflection (baseline)
B. an upward deflection on an ECG means the current flow vector is toward the negative electrode
C. a downward deflection means the current flow vector is toward the positive electrode
D. All of the answers
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