ABO Practice Test – Exam Questions with Correct Detailed Answers (Latest 2025 Update)

Logothetis: Local Anesthesia for the Dental Hygienist Chapter 02:
Neurophysiology Answers to End-of-chapter Review Questions 2025

Terms in this set (49)


ANS: B

Correct: (b) The main components of sensory and motor
Which of the following would
neurons are the same; the main difference between a sensory
differentiate a motor neuron
neuron and a motor neuron is the location of the cell body.
from a sensory neuron? Incorrect:
(a) The location of the synapse is essentially the same in a motor and
a. Location of the synapse sensory neuron.
b. Location of the cell body (c) The location of the axon is essentially the same in a motor and sensory
c. Location of the axon
neuron.
d. Location of the extracellular fluid
(d) The location of the extracellular fluid is essentially the
same in a motor and sensory neuron.


REF: Page 2-10
ANS: B

The location of the fasciculi will Correct: (b) Mantle bundles will receive the anesthetic (and the
determine how and when the resulting effects) at a higher concentration before the core
local anesthetic takes effect: bundles.
_______ bundles receive a _______ Incorrect:
concentration of the anesthetic _. (a) Core bundles will receive the anesthetic (and the resulting
effects) at a diluted concentration after the mantle bundles.
a. core, diluted, first (c) Core bundles will receive the anesthetic (and the resulting
b. mantle, higher, first effects) at a diluted concentration after the mantle bundles.
c. core, higher, first
(d) Mantle bundles will receive the anesthetic (and the resulting
d. mantle, diluted, last
effects) at a higher concentration before the core bundles.


REF: Page 2-10

, ANS: C

_____ conduct both incoming and
Correct: (c) Mixed nerves have both afferent and efferent nerves
outgoing nerve transmissions.
and can transmit both incoming and outgoing messages.
Incorrect:
a. Efferent nerves (a) Efferent nerves conduct only the outgoing impulses.
b. Afferent nerves
(b) Afferent nerves conduct only the ingoing impulses.
c. Mixed nerves
(d) The term combination nerve is not valid.
d. Combination nerves

REF: Page 2-10
ANS: A
The majority of sensory input to
the neuron occurs at the _. Correct: (a) The dendritic zone is where the bulk of input to the
neuron occurs. Incorrect:
a. dendritic zone (b) The axon hillock is generally involved in information outflow.

(c) The (output zone) synaptic knobs are involved in information outflow.
b. axon hillock
(d) The cell body (soma) is not involved in impulse transmission.
c. synaptic knobs

d. soma
REF: Page 2-10
ANS: A
The nervous system is organized
by
location, direction of nerve Correct: (a) The somatic and autonomic nervous systems are
impulse, and function. Which organized according to function.
Incorrect:
of the following
(b) The central and peripheral nervous systems are
categorizes the nervous system
organized by location and direction of nerves.
by function?
(c) The afferent and efferent divisions of the nervous

system are organized by direction of nerves.
a. Somatic and autonomic nervous
(d) Choices B and C are both incorrect.
systems
b. Central and peripheral nervous
systems REF: Page 2-7
c. Afferent and efferent

divisions of the nervous
system
d. Both B and C

, The somatic nervous system ANS: A
carries
information to voluntary and Correct: (a) The first statement is true. The second statement is
reflex motor organs. Somatic false: smooth muscle and cardiac muscle are involuntary tissue.
effectors control smooth Incorrect:
muscle, cardiac muscle, and (b) The first statement is true; the second statement is false.

(c) The second statement is false.
glandular tissue.
(d) The first statement is true.


a. The first statement is true;
REF: Page 2-7
the second statement is
false.
b. The first statement is false;

the second statement is true.
c. Both statements are true.

d. Both statements are false.