Which of the following procedures would mimic the actions of the parasympathetic division of the nervous system?Severing certain vagus nerve fibers to reduce the activity of cells involved in stomach acid secretionStimulating certain sacral nerve fibers to cause normal urination patterns as a treatment for loss of bladder controlStimulating certain facial nerve fibers supplying the submandibular glands to improve saliva productionA.II onlyB.III onlyC.II and III onlyD.I, II, and III

The parasympathetic division of the nervous system is responsible for "rest and digest" functions. This includes slowing the heart rate, increasing intestinal and gland activity, and relaxing sphincter muscles in the gastrointestinal tract.

1. Severing certain vagus nerve fibers to reduce the activity of cells involved in stomach acid secretion: The vagus nerve is a part of the parasympathetic nervous system and it stimulates the production of stomach acid for digestion. Therefore, severing these fibers would inhibit a function of the parasympathetic nervous system, not mimic it.

2. Stimulating certain sacral nerve fibers to cause normal urination patterns as a treatment for loss of bladder control: The sacral nerves are part of the parasympathetic nervous system and they control the bladder. Stimulating these nerves would mimic the parasympathetic nervous system.

3. Stimulating certain facial nerve fibers supplying the submandibular glands to improve saliva production: The facial nerve is part of the parasympathetic nervous system and it stimulates saliva production. Therefore, stimulating these nerves would mimic the parasympathetic nervous system.

So, the correct answer is C. II and III only.