CDCA LOCAL ANESTHESIA EXAM |
QUESTIONS AND 100% CORRECT ANSWERS |
RATED A+ | 2026/2027 GUIDE
what is the dendritic zone
- Correct Answer - branching out of free nerve endings in the most distal
segment of the sensory neuron
What are free nerve endings?
- Correct Answer - tree branch-like extensions that pick up impulses from
other cells
What is an axon?
- Correct Answer - the long threadlike part of a nerve cell along which
impulses are conducted away from the cell body to other cells.
What are Schwann cells?
- Correct Answer - These cells form the myelin sheaths around nerve
fibers that are found in the PNS
What are the nodes of Ranvier?
- Correct Answer - gaps in myelin sheath along the axon
,what are mantle fibers
- Correct Answer - bundles of nerve fibers located near the surface of
the nerve cell
are mantle or core fibers more rapidly affected by local anesthetic
- Correct Answer - mantle fibers
what are core fibers - Correct Answer - bundles of fiber located closer to
the center of the cell
do mantle or core fibers innervate closer to the root trunk - Correct
Answer - mantle fibers
do mantle or core fibers remain anesthetized longer - Correct Answer -
mantle fibers
do mantle or core fibers innervate further away from the root trunk
(closer to the incisors) - Correct Answer - core fibers
What are saltatory conductions? - Correct Answer - when electrical
impulses leap from one node of ranvier to another
,what is the sequence of nerve impulse conduction (in order) - Correct
Answer - depolarization, repolarization, hyperpolarization, refractory
period
Describe resting potential (resting state) - Correct Answer - when no
signals are being sent so the outside of the neuron is positively charged
with excess SODIUM and the inside of the neuron is negatively charged
with excess POTASSIUM
Explain the process of depolarization - Correct Answer - when a neuron
is stimulated stimulated, sodium ion channels open to allow sodium ions
inside the neuron
what happens after the firing threshold of a neuron is reached - Correct
Answer - sodium ions rapidly rush into the neuron and it becomes
positively charged
explain the process of repolarization - Correct Answer - when the neuron
is flooded with sodium ions, the gated potassium ion channels open to
allow potassium out of the neuron
describe hyperpolarization - Correct Answer - more negative inside the
neuron cell
, explain the process of the refractory period - Correct Answer - when
sodium and potassium ions are returning to their normal position and the
neuron does not respond to any other external stimuli
Describe the absolute refractory period - Correct Answer - Time in which
the cells cannot respond to a stimulus regardless of the strength of the
new stimuli
describe relative refractory period - Correct Answer - An exceptionally
strong stimulus can trigger a response.
the aromatic portion of local anesthesia is also known as - Correct
Answer - lipophilic group
the intermediate chain of local anesthesia is composed of what - Correct
Answer - either an ester or amide linkage
the amine portion of local anesthesia is also known as - Correct Answer
- hydrophilic group
do local anesthetics make strong or weak bases - Correct Answer -
weak
QUESTIONS AND 100% CORRECT ANSWERS |
RATED A+ | 2026/2027 GUIDE
what is the dendritic zone
- Correct Answer - branching out of free nerve endings in the most distal
segment of the sensory neuron
What are free nerve endings?
- Correct Answer - tree branch-like extensions that pick up impulses from
other cells
What is an axon?
- Correct Answer - the long threadlike part of a nerve cell along which
impulses are conducted away from the cell body to other cells.
What are Schwann cells?
- Correct Answer - These cells form the myelin sheaths around nerve
fibers that are found in the PNS
What are the nodes of Ranvier?
- Correct Answer - gaps in myelin sheath along the axon
,what are mantle fibers
- Correct Answer - bundles of nerve fibers located near the surface of
the nerve cell
are mantle or core fibers more rapidly affected by local anesthetic
- Correct Answer - mantle fibers
what are core fibers - Correct Answer - bundles of fiber located closer to
the center of the cell
do mantle or core fibers innervate closer to the root trunk - Correct
Answer - mantle fibers
do mantle or core fibers remain anesthetized longer - Correct Answer -
mantle fibers
do mantle or core fibers innervate further away from the root trunk
(closer to the incisors) - Correct Answer - core fibers
What are saltatory conductions? - Correct Answer - when electrical
impulses leap from one node of ranvier to another
,what is the sequence of nerve impulse conduction (in order) - Correct
Answer - depolarization, repolarization, hyperpolarization, refractory
period
Describe resting potential (resting state) - Correct Answer - when no
signals are being sent so the outside of the neuron is positively charged
with excess SODIUM and the inside of the neuron is negatively charged
with excess POTASSIUM
Explain the process of depolarization - Correct Answer - when a neuron
is stimulated stimulated, sodium ion channels open to allow sodium ions
inside the neuron
what happens after the firing threshold of a neuron is reached - Correct
Answer - sodium ions rapidly rush into the neuron and it becomes
positively charged
explain the process of repolarization - Correct Answer - when the neuron
is flooded with sodium ions, the gated potassium ion channels open to
allow potassium out of the neuron
describe hyperpolarization - Correct Answer - more negative inside the
neuron cell
, explain the process of the refractory period - Correct Answer - when
sodium and potassium ions are returning to their normal position and the
neuron does not respond to any other external stimuli
Describe the absolute refractory period - Correct Answer - Time in which
the cells cannot respond to a stimulus regardless of the strength of the
new stimuli
describe relative refractory period - Correct Answer - An exceptionally
strong stimulus can trigger a response.
the aromatic portion of local anesthesia is also known as - Correct
Answer - lipophilic group
the intermediate chain of local anesthesia is composed of what - Correct
Answer - either an ester or amide linkage
the amine portion of local anesthesia is also known as - Correct Answer
- hydrophilic group
do local anesthetics make strong or weak bases - Correct Answer -
weak
