The parasympathetic nervous system and the sympathetic nervous system ... Submandibular glands are one of the sections of your anatomy that you probably give little thought to ...

The slow breath holding allows carbon dioxide (CO2) to temporarily build in your blood, decreasing your heart rate and stimulating your parasympathetic nervous system, according to the American ...

Action of glands is inhibited - decrease in production of secretions Parasympathetic (rest and digest) Action of glands is stimulated - increase in production of secretions ...