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 ...

As these ganglia are a part of the parasympathetic innervation from the pelvic nerves, the congenital absence of mesenteric ganglion cells in the rectosigmoid in Hirschsprung's disease probably ...

The ganglion cells in Auerbach's plexus are part of the parasympathetic nervous system. Since the lower colon is invariably affected in these cases, the fact that this area of colon receives its ...

Understanding the sympathetic and parasympathetic nervous systems is especially relevant for paramedics because ALS personnel have access to medications that directly influence these two systems.