A. It decreases the heart beat
B. It regulates the heart beat
C. It increases the heart beat
D. It accelerates blood supply to the heart.
Free MCQs for FPSC, NTS, PPSC, PMS, CSS & All Pakistan Exams 2026
A. It decreases the heart beat
B. It regulates the heart beat
C. It increases the heart beat
D. It accelerates blood supply to the heart.