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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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
Neglecting the effect of air resistance, which of the following is/are true regarding the horizontal component of projectile velocity?
A. remains constant throughout flight B. changes according to gravitational acceleration C. equal to 0 D. both A and B
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.
What part of the long bone is a source of osteoblasts?
A. Marrow B. Endosteum C. Periosteum D. Cartilage