The autonomic nervous system, also known as the involuntary nervous system, regulates those facets in the body that occur automatically, such as breathing, blood pressure, digestion, heart beat, bladder function and narrowing or widening of the blood vessels.
Is the dry chemical in a fire extinguisher dangerous when inhaled?   The dry powder in ABC fire extinguishers is non-toxic but can cause skin irritation. You can check the manufacturer's website but this info is from the Kidde user guide â¦for their fire extinguishers and should be accurate.
The substances in dry chemical extinguishers can stop this process. 1  Monoammonium phosphate, also known as tri-class, multipurpose, or ABC dry chemical, used on class A, B, and C fires. 2  Sodium bicarbonate, regular or ordinary used on class B and C fires, was the first of the dry chemical agents developed.