Question 32 of 46

Click on the correct answer to the following question:

In the previous question, the reason the presence of a vasoconstrictor caused a burning sensation is because:

  1. the vasoconstrictor increased the pH of the solution in the cartridge
  2. the vasoconstrictor lowered the pH of the solution in the cartridge
  3. the vasoconstrictor rendered the solution in the cartridge neutral
  4. the vasoconstrictor lowered the pH of the tissues surrounding the injection site