parasympathetic fibers

Parasympathetic fibers are part of the autonomic nervous system, which controls automatic body functions. They help the body relax, conserve energy, and maintain basic functions like slowing the heart rate, reducing blood pressure, promoting digestion, and encouraging rest and recovery. Originating mainly from the brain and lower spinal cord, these nerve fibers communicate with organs to regulate activities without conscious effort. Think of them as the body's "rest and digest" system, working quietly in the background to keep your body balanced and functioning smoothly during times of calm and relaxation.