The involuntary part of the PNS includes the sympathetic, parasympathetic, and enteric nervous systems. The sympathetic, parasympathetic, and enteric nervous system work together to balance out ...

Heart Rate Increase in rate of contraction of cardiac muscle - cardiac output increases Decrease in rate of contraction of cardiac muscle - cardiac output decreases Breathing Rate Smooth muscle of ...

So, what caused this day-night rhythm in the heart? “Well, one thing is this local circadian clock, but what this paper shows is that there's something else, and that's the sympathetic nervous system, ...

Neuroblastoma is a rare cancer that develops in a part of the peripheral nervous system called the sympathetic nervous system. Neuroblastoma cancer is diagnosed in about 700 children in the United ...