Wreb Practice Exam 1 LA Questions with Correct Answers 100% Verified By Experts|
2025/2026 Latest Update
**Which of the following local anesthesic blocks uses pressure anesthesia of the tissues to
reduce pt discomfort?
A. Infraorbital block
B. Inferior alveolar block
C. Buccal block
D. Greater palatine block D. Greater palatine block
Esters have a shorter half-life than amides due to which of the following?
A. Amides are broke down into the liver
B. Esters are broken down in the blood plasma
C. Esters are eliminated from the body via the kidneys
D. Amides are eliminated from the body via the kidneys Ccc
** In the dissociation of local anesthetics, diffusion of the LA occurs best in which of the
following situations?
A. When there are more free base molecules available
B. When the pH is lower in the tissues
C. When there are more cations available
D. When the pH is neutral Cccc
Which is true of most nitrous oxide and oxygen office systems?
A. The tidal volume refers to the % of nitrous oxide that it takes for the pt to feel relaxed
B. The scavenger system is hooked up to the saliva ejector
C. When the nitrous oxide runs out the oxygen flow stops
D. When the oxygen runs out the nitrous oxide flow stops
, Allergic reactions are which of the following?
A. Dose related
B. Always depend on previous encounters of allergens
C. Not dose related
The amount of local anesthetic in ml of 4% Articaine HCL. 1:100,000 epi is which of the
following?
A. 4mg
B. 40mg
C. 54mg
D. 72mg
You are anesthetizing half of the mouth. You have given an IA no and Buccal no. When you
penetrate to give a PSA no, the patient complains of discomfort. You do not feel bone
resistance but some resistance penetrating and removing the needle. what might you do to
eliminate this discomfort when giving the MSA?
A. Penetrate more slowly
B. Change the needle
C. Align the bevel with the bone
D. Give more anesthetic
When giving the PSA no, trismus can be caused by penetrating which of the following muscles?
A. Buccinator
B. Lateral palpebral
C. Lateral Pterygoid
D. Medial Pterygoid
Epinephrine in the local anesthetics .5% Bupivaciane HCL (Marcaine) is used in a concentration
of?
2025/2026 Latest Update
**Which of the following local anesthesic blocks uses pressure anesthesia of the tissues to
reduce pt discomfort?
A. Infraorbital block
B. Inferior alveolar block
C. Buccal block
D. Greater palatine block D. Greater palatine block
Esters have a shorter half-life than amides due to which of the following?
A. Amides are broke down into the liver
B. Esters are broken down in the blood plasma
C. Esters are eliminated from the body via the kidneys
D. Amides are eliminated from the body via the kidneys Ccc
** In the dissociation of local anesthetics, diffusion of the LA occurs best in which of the
following situations?
A. When there are more free base molecules available
B. When the pH is lower in the tissues
C. When there are more cations available
D. When the pH is neutral Cccc
Which is true of most nitrous oxide and oxygen office systems?
A. The tidal volume refers to the % of nitrous oxide that it takes for the pt to feel relaxed
B. The scavenger system is hooked up to the saliva ejector
C. When the nitrous oxide runs out the oxygen flow stops
D. When the oxygen runs out the nitrous oxide flow stops
, Allergic reactions are which of the following?
A. Dose related
B. Always depend on previous encounters of allergens
C. Not dose related
The amount of local anesthetic in ml of 4% Articaine HCL. 1:100,000 epi is which of the
following?
A. 4mg
B. 40mg
C. 54mg
D. 72mg
You are anesthetizing half of the mouth. You have given an IA no and Buccal no. When you
penetrate to give a PSA no, the patient complains of discomfort. You do not feel bone
resistance but some resistance penetrating and removing the needle. what might you do to
eliminate this discomfort when giving the MSA?
A. Penetrate more slowly
B. Change the needle
C. Align the bevel with the bone
D. Give more anesthetic
When giving the PSA no, trismus can be caused by penetrating which of the following muscles?
A. Buccinator
B. Lateral palpebral
C. Lateral Pterygoid
D. Medial Pterygoid
Epinephrine in the local anesthetics .5% Bupivaciane HCL (Marcaine) is used in a concentration
of?
