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.
Gain the recommended amount of weight. Talk with your doctor about how much weight you should gain. Women with a normal BMI should gain between 25 and 35 pounds during pregnancy. If you were overweight before getting pregnant, your doctor may recommend that you gain only 15 to 25 pounds. Obese women should gain about 11 to 20 pounds.