MCQ
Function of sympathetic system is to
- ADecrease heart beat
- ✓Increase heart beat
- CContract respiratory organ
- DSecrete saliva
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Choose the correct combination of $A , B$ and $C$ from the following options
$(i)$ is released by sympathetic fibers
$(ii)$ is released by parasympathetic fibers
$(iii)$ increases the heart rate
$(iv)$ decreases blood pressure.
Which of the above statements are correct ?