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.
Your pre-pregnancy body mass index (BMI) rating is typically a good indicator of how much weight you should expect to gain during pregnancy. If you had a healthy BMI, falling between 18.5 and 24.9, it is typical to see between 25 and 35 pounds of weight gain if you follow a healthy diet for pregnancy.Women who were underweight, with BMI scores of 18.4 and below, will usually see more dramatic weight gains of up to 40 pounds.f you had a healthy BMI, falling between 18.5 and 24.9, it is typical to see between 25 and 35 pounds of weight gain if you follow a healthy diet for pregnancy.