In this activity, which of the following will increase the stimulus intensity?
A) decreasing the absolute refractory period
B) increasing the relative refractory period
C) increasing the absolute refractory period
D) increasing the duration of the stimulus
Ans: D) increasing the duration of the stimulus
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The brachiocephalic artery goes to the
A. stomach. B. right arm and right side of head. C. head. D. left lung and left leg. E. lungs.
Which type of cell produces and secretes antibodies?
A. Memory B-lymphocyte B. Memory T-lymphocyte C. Natural killer cell D. Plasma cell E. Cytotoxic T-lymphocyte
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A. remains constant throughout flight B. changes according to gravitational acceleration C. equal to 0 D. both A and B