Post test Flashcards
1
Q
- Name the cranial nerve that provides sensory innervation to the teeth, bone and soft tissues of the oral cavity:
a. Trochlear
b. Trigeminal
c. Facial
d. Hypoglossal
A
b. Trigeminal
2
Q
- After administering a left inferior alveolar nerve (IAN) block to your patient, #23 and #24 are still sensitive, even though the other teeth in the quadrant are numb. It appears these teeth have not received adequate anesthesia. What could be the cause of this?
a. overlap of sensory fibers from the right side
b. a long buccal injection is needed to anesthetize #23 and #24
c. inadequate volume of anesthetic was administered
d. insertion of the needle was too inferior
A
a. overlap of sensory fibers from the right side
3
Q
- After administering a right inferior alveolar nerve (IAN) block to your patient, the first molar is still sensitive, even though the other teeth in the quadrant are numb. What could be the cause of this:
a. Inadequate volume of anesthetic was depositied
b. insertion of the needle was too inferior
c. the local anesthetic agent that was used lacked a vasoconstrictor
d. innervation of this tooth is being supplied by the mylohyoid nerve
A
d. innervation of this tooth is being supplied by the mylohyoid nerve
4
Q
- Name the nerve which provides sensory innervation to the palatal gingiva of the maxillary first molar:
a. nasopalatine
b. greater palatine
c. posterior superior alveolar
d. lingual
A
b. greater palatine
5
Q
- Name the nerve which provides sensory innervation to the buccal gingiva of the mandibular molars and the mucobuccal fold in that region:
a. inferior alveolar
b. facial
c. mental
d. long buccal
A
d. long buccal
6
Q
- Name the nerve which provides sensory innervation to the pulp of the maxillary 1st molar:
a. posterior superior alveolar
b. anterior superior alveolar
c. infraorbital
d. facial
A
a. posterior superior alveolar
7
Q
- If a hematoma appears after the posterior superior alveolar injection (PSA), it is most likely due to:
a. anesthetic agent was injected too quickly
b. lack of a vasoconstrictor in the anesthetic agent
c. needle inserted too far posteriorly into the pterygoid plexus of veins
d. failure to aspirate
A
c. needle inserted too far posteriorly into the pterygoid plexus of veins
8
Q
- The operator places her index finger or thumb in the coronoid notch when administering the inferior alveolar nerve block. What significance does this technique have?:
a. helps determine the height of the injection
b. helps determine the penetration depth of the injection
c. helps determine the site to administer the lingual nerve block if that is to follow the inferior alveolar nerve block
d. it has no importance in determining anything of significance for the inferior alveolar nerve block
A
a. helps determine the height of the injection
9
Q
- Because the mandible consists of denser cortical bone than the maxilla, the incidence of clinically adequate anesthesia is higher in the mandible.
a. Both parts of the statement are true
b. Both parts of the statement are false
c. The first part is true, the second part is false
d. The first part is false, the second part is true
A
c. The first part is true, the second part is false
10
Q
- In areas of inflammation and infection, deposit a larger amount of anesthetic and _______________ to maximize the effectiveness of the local anesthetic agent:
a. move away from the area of inflammation and inject further up the nerve branch
b. use an anesthetic without epinephrine
c. use pressure anesthesia
d. avoid using topical anesthetic
A
a. move away from the area of inflammation and inject further up the nerve branch
11
Q
- The myelin sheath and the nodes of Ranvier on a myelinated nerve fiber enable a nerve’s impulse to:
a. conduct impulses at a much faster rate than an unmyelinated nerve of equal size
b. conduct impulses at a much slower rate than an unmyelinated nerve of equal size
c. the myelin sheath and nodes of Ranvier have no effect on a nerve’s impulse
A
a. conduct impulses at a much faster rate than an unmyelinated nerve of equal size
12
Q
- When a stimulus excites a nerve, the following sequence of events occurs:
a. slow depolarization, followed by rapid depolarization, and then reversal of the electrical potential across the nerve membrane leaving the interior of the nerve electrically positive in relation to the negative exterior
b. slow depolarization, followed by a neutralization of the interior and the exterior of the nerve
c. rapid depolarization resulting in the nerve achieving its resting potential
A
a. slow depolarization, followed by rapid depolarization, and then reversal of the electrical potential across the nerve membrane leaving the interior of the nerve electrically positive in relation to the negative exterior
13
Q
- The phase of conduction affected by local anesthetics is the repolarization phase.
a. This statement is true
b. This statement is false
A
b. This statement is false
14
Q
- The process of saltatory conduction can be described by all of the following EXCEPT one. Which is the EXCEPTION?:
a. is the manner in which impulse conduction occurs in myelinated nerves
b. produces faster and more energy-efficient conduction
c. is more rapid in a thinner axon
d. progresses from one node to the next in a stepwise fashion
A
c. is more rapid in a thinner axon
15
Q
- When administering local anesthesia to a pediatric patient, all of the following are true EXCEPT one. Which is the EXCEPTION?:
a. maxillary and mandibular bones are less dense than in an adult patient
b. PDL injections are contraindicated
c. the mandibular foramen is located more superiorly than in an adult
d. a decreased depth of penetration is necessary than in an adult patient
A
c. the mandibular foramen is located more superiorly than in an adult
