Monica Is Going to the Dentist to Get Her First

Multiple Choice

Monica is going to the dentist to get her first filling. She tries to be responsible about all medications, so before he numbs her mouth, she asks the dentist to explain how Novocain works. The dentist tells Monica that Novocain creates numbness and prevents pain by _______________ in the target area.

A) telling glial cells to move neurons out of the way
B) dissolving the sodium ions
C) creating extra potassium ions
D) stopping action potentials from occurring
E) enhancing the analgesic effects of endorphins