Its action is described as being complementary to that of the sympathetic nervous system, which is responsible for stimulating activities associated with the fight-or-flight response. Nerve fibres of the parasympathetic nervous system arise from the central nervous system. Specific nerves include several cranial nerves, specifically the oculomotor nerve, facial nerve, glossopharyngeal nerve, and vagus nerve. Three spinal nerves in the sacrum (S2-4) also act as parasympathetic nerves.
A healthy BMI is considered to be between 18.5 and 24.9. Based on these BMI tables, the National Heart, Lung and Blood Institute suggests that a healthy weight range for women who are 5 feet 4 inches tall is 110 to 140 pounds.
For adults, the healthy BMI range is from 18.5 to 24.9, regardless of age or gender, and anything over this means you are considered overweight for your height. The average BMI for women age 20 and older is 28.7. Women 80 years and older have the lowest average BMI, at 26.7, followed by those between 20 and 29 years old, at 27.5, and women from 60 to 69 have the highest, at 29.6.