________ are compounds that accelerate chemical reactions without themselves being permanently changed. Enzymes are an example of these compounds

A stronger neuro-excitation during TENS can be created by

A) increasing current density with a small electrode B) increasing pulse width C) increasing pulse intensity D) all of the above

Which of the following patients with difficulty breathing should NOT receive supplemental oxygen?

A) An infant whose eyes may be damaged by excessive oxygen administration B) A patient with a chronic lung disease who may have a hypoxic drive C) A patient whose oxygen saturation level is 100% on room air D) None of these patients should have oxygen withheld.