Local Anesthesia Final UPDATED Questions
and CORRECT Answers
Afferent or sensory nerves conduct impulses to the
a. CNS.
b. periphery of the body.
c. motor nerves of muscles.
d. pain stimulus. - CORRECT ANSWER - a. CNS
Efferent or motor neurons conduct messages from
a. the periphery of the body to the CNS.
b. the pain stimulus to the periphery.
c. the CNS to the periphery.
d. the cell body to the CNS. - CORRECT ANSWER - c. the CNS to the periphery.
Branches of the facial nerve to muscles of the face are enmeshed in which salivary gland?
a. sublingual
b. submandibular
c. parotid
d. incisive - CORRECT ANSWER - c. parotid
Which of the following gauge numbers indicates the needle with the smallest lumen?
a. 30 gauge
b. 27 gauge
c. 25 gauge
d. 23 gauge - CORRECT ANSWER - a. 30 gauge
When is it OK to use a 30 gauge needle.
,a. When giving the palatal injections
b. When giving an injection to a child under the age of 8
c. When giving the IANB
d. 30 gauge needles are too small to allow aspiration and should not be used. - CORRECT
ANSWER - d. 30 gauge needles are too small to allow aspiration and should not be used.
How much solution is contained in most dental anesthetic cartridges?
a. 0.18 cc/.017cc
b. 0.0018 cc/0.0018 cc
c. 1.8 ml/1.7 ml
d. 18.0 ml/17.0 ml - CORRECT ANSWER - c. 1.8 ml/1.7 ml
Drawing blood into the anesthetic cartridge is known as:
a. aspiration
b. deposition
c. penetration
d. positive aspiration - CORRECT ANSWER - d. positive aspiration
When you find blood in your anesthetic cartridge what should you do?
a. deposit the anesthetic because it doesn't mean anything
b. replace the needle and cartridge then reattempt injection
c. replace the cartridge only
d. replace the needle only - CORRECT ANSWER - b. replace the needle and cartridge
then reattempt injection
What is the MAIN way most local anesthetics work?
a. by disrupting the lipid molecule
b. Decreasing the rate of depolarization especially in the slow depolarization so the threshold
potential is never met.
, c. By increasing the rate of repolarization
d. By not alternating the resting potential of the nerve membrane - CORRECT ANSWER -
b. Decreasing the rate of depolarization especially in the slow depolarization so the threshold
potential is never met.
Which nerve contains the ophthalmic, maxillary and mandibular nerve divisions?
a. optic nerve
b. trochlear nerve
c. trigeminal nerve
d. facial nerve - CORRECT ANSWER - c. trigeminal nerve
The maxillary nerve branches into all of the following with one EXCEPTION. Which is the one
exception?
a. posterior superior alveolar (PSA) nerve
b. inferior alveolar nerve
c. the greater palatine (GP) nerve
d. nasopalatine (NP) nerve - CORRECT ANSWER - b. inferior alveolar nerve
A factor that influences the action of local anesthetics is:
a. the patient's individual response to the anesthetic.
b. anxiety
c. the type of syringe used.
d. a and b. - CORRECT ANSWER - d. a and b.
Millions of dental patients avoid dental care due to fear. Fear of dental injections is a primary
reason that patients avoid dental care.
a. the first statement is true and the second statement is false
b. the first statement is true and the second statement is true
c. the first statement is false and the second statement is false
and CORRECT Answers
Afferent or sensory nerves conduct impulses to the
a. CNS.
b. periphery of the body.
c. motor nerves of muscles.
d. pain stimulus. - CORRECT ANSWER - a. CNS
Efferent or motor neurons conduct messages from
a. the periphery of the body to the CNS.
b. the pain stimulus to the periphery.
c. the CNS to the periphery.
d. the cell body to the CNS. - CORRECT ANSWER - c. the CNS to the periphery.
Branches of the facial nerve to muscles of the face are enmeshed in which salivary gland?
a. sublingual
b. submandibular
c. parotid
d. incisive - CORRECT ANSWER - c. parotid
Which of the following gauge numbers indicates the needle with the smallest lumen?
a. 30 gauge
b. 27 gauge
c. 25 gauge
d. 23 gauge - CORRECT ANSWER - a. 30 gauge
When is it OK to use a 30 gauge needle.
,a. When giving the palatal injections
b. When giving an injection to a child under the age of 8
c. When giving the IANB
d. 30 gauge needles are too small to allow aspiration and should not be used. - CORRECT
ANSWER - d. 30 gauge needles are too small to allow aspiration and should not be used.
How much solution is contained in most dental anesthetic cartridges?
a. 0.18 cc/.017cc
b. 0.0018 cc/0.0018 cc
c. 1.8 ml/1.7 ml
d. 18.0 ml/17.0 ml - CORRECT ANSWER - c. 1.8 ml/1.7 ml
Drawing blood into the anesthetic cartridge is known as:
a. aspiration
b. deposition
c. penetration
d. positive aspiration - CORRECT ANSWER - d. positive aspiration
When you find blood in your anesthetic cartridge what should you do?
a. deposit the anesthetic because it doesn't mean anything
b. replace the needle and cartridge then reattempt injection
c. replace the cartridge only
d. replace the needle only - CORRECT ANSWER - b. replace the needle and cartridge
then reattempt injection
What is the MAIN way most local anesthetics work?
a. by disrupting the lipid molecule
b. Decreasing the rate of depolarization especially in the slow depolarization so the threshold
potential is never met.
, c. By increasing the rate of repolarization
d. By not alternating the resting potential of the nerve membrane - CORRECT ANSWER -
b. Decreasing the rate of depolarization especially in the slow depolarization so the threshold
potential is never met.
Which nerve contains the ophthalmic, maxillary and mandibular nerve divisions?
a. optic nerve
b. trochlear nerve
c. trigeminal nerve
d. facial nerve - CORRECT ANSWER - c. trigeminal nerve
The maxillary nerve branches into all of the following with one EXCEPTION. Which is the one
exception?
a. posterior superior alveolar (PSA) nerve
b. inferior alveolar nerve
c. the greater palatine (GP) nerve
d. nasopalatine (NP) nerve - CORRECT ANSWER - b. inferior alveolar nerve
A factor that influences the action of local anesthetics is:
a. the patient's individual response to the anesthetic.
b. anxiety
c. the type of syringe used.
d. a and b. - CORRECT ANSWER - d. a and b.
Millions of dental patients avoid dental care due to fear. Fear of dental injections is a primary
reason that patients avoid dental care.
a. the first statement is true and the second statement is false
b. the first statement is true and the second statement is true
c. the first statement is false and the second statement is false
