WREB Local Anesthesia UPDATED
ACTUAL Exam Questions and CORRECT
Answers
sodium bisulfite has been added to dental cartridges to: - CORRECT ANSWER - - prevent
oxidation of vasoconstrictor
- prevents oxidation of epinephrine
- preserves anesthetic
ultra-short needles are - CORRECT ANSWER - 10-15mm
sodium chloride is added to dental cartridges to: - CORRECT ANSWER - make the
solution isotonic with body tissues
needle barb causes - CORRECT ANSWER - - sharp pain
- caused from contacting bone
- will catch on gauze
During aspiration, you see blood rapidly coming through the dental cartridge. What should the
next step be in this situation?
a. turn the syringe 45 degrees and aspirate again
b. pull back the needle and re-insert it
c. Remove the needle and replace the cartridge
d. No action is needed - CORRECT ANSWER - C. Remove needle and replace the
cartidge
*keyword "rapidly"
, Which of the following in a sensory nerve branch of the mandibular (v3) anterior trunk? -
CORRECT ANSWER - buccal nerve
the motor root supplies what? - CORRECT ANSWER - the muscles of mastication
(medial pterygoid, masseter, temporalis, lateral pterygoid)
the sensory root supplies what? - CORRECT ANSWER - skin of face, tissues of oral
cavity (including buccal nerve)
local anesthetics _________ the rate of depolarization
a. increase
b. decrease
c. balance
d. stop - CORRECT ANSWER - b. decrease
which of the following provides sensory innervation to the soft palate?
a. lesser palatine nerve
b. greater palatine nerve
c. nasopalatine nerve
d. posterior superior alveolar nerve - CORRECT ANSWER - a. lesser palatine nerve
what happens during depolarization of the nerve cell?
a. sodium ions exit the nerve membrane
b. sodium ions enter the nerve membrane
c. both sodium ions and potassium ions enter the nerve membrane
d. both sodium ions and potassium ions exit the nerve membrane - CORRECT ANSWER -
b. sodium ions enter the nerve membrane
local anesthetics mainly:
ACTUAL Exam Questions and CORRECT
Answers
sodium bisulfite has been added to dental cartridges to: - CORRECT ANSWER - - prevent
oxidation of vasoconstrictor
- prevents oxidation of epinephrine
- preserves anesthetic
ultra-short needles are - CORRECT ANSWER - 10-15mm
sodium chloride is added to dental cartridges to: - CORRECT ANSWER - make the
solution isotonic with body tissues
needle barb causes - CORRECT ANSWER - - sharp pain
- caused from contacting bone
- will catch on gauze
During aspiration, you see blood rapidly coming through the dental cartridge. What should the
next step be in this situation?
a. turn the syringe 45 degrees and aspirate again
b. pull back the needle and re-insert it
c. Remove the needle and replace the cartridge
d. No action is needed - CORRECT ANSWER - C. Remove needle and replace the
cartidge
*keyword "rapidly"
, Which of the following in a sensory nerve branch of the mandibular (v3) anterior trunk? -
CORRECT ANSWER - buccal nerve
the motor root supplies what? - CORRECT ANSWER - the muscles of mastication
(medial pterygoid, masseter, temporalis, lateral pterygoid)
the sensory root supplies what? - CORRECT ANSWER - skin of face, tissues of oral
cavity (including buccal nerve)
local anesthetics _________ the rate of depolarization
a. increase
b. decrease
c. balance
d. stop - CORRECT ANSWER - b. decrease
which of the following provides sensory innervation to the soft palate?
a. lesser palatine nerve
b. greater palatine nerve
c. nasopalatine nerve
d. posterior superior alveolar nerve - CORRECT ANSWER - a. lesser palatine nerve
what happens during depolarization of the nerve cell?
a. sodium ions exit the nerve membrane
b. sodium ions enter the nerve membrane
c. both sodium ions and potassium ions enter the nerve membrane
d. both sodium ions and potassium ions exit the nerve membrane - CORRECT ANSWER -
b. sodium ions enter the nerve membrane
local anesthetics mainly:
