BIOL 2457 Test 3 Review Questions and 100% Correct Answers 2026/27 Update - UTA
1. Beth touches a sharp object cries out in pain, but is unable to pull her hand away from
the object. In this situation, the neurons are the most likely reason she cannot
respond.
A) Sensory neurons
B) Sympathetic neurons
C) Parasympathetic
D) Somatic motor neurons
2. A major function of the neurons of the nervous system in communication that allows
our bodies to maintain homeostasis. In many cases exes reflexes will occur without our
awareness. Which function of the nervous system is bypasses during a reflex response?
A) Sensory function
B) Motor function
C) Integrative function
D) None; all functions occur in reflexes
3. The somatic, sympathetic, parasympathetic and enteric division of the nervous system
all play a role in the of the nervous system.
a) Sensory function
b) Integrative function
c) Motor function
d) Sensory and motor functions
4. Information sent from the dendrites to the , where an action potential may be
generated?
a) Cell body ( soma )
b) Axon terminal
c) Synaptic end bulb
d) Axon
5. A scientist discovers that a neuron does not have adequate stores of a neurotransmitter.
What part of the neuron is he observing?
a. The axon
b. The sympathetic terminals
c. The dendrites
d. The cell body
6. If the myelin serves to insulate an axon, decreasing the loss of electrical signal and
increasing speed of conduction, then which of the following statements accurately
predicts where myelin will have the largest effect?
a. Neurons with short axons that relay information of minor importance.
b. Neurons with short axons that relay critical information.
BIOL 2457 Test 3
, c. Neurons with long axons that relay information of minor importance.
d. Neurons with long axons that relay critical information.
7. Which statement is most accurate regarding the image below?
a. (i)Is the threshold that must be reached for the generation of an action potential.
b. (ii)is caused by open voltage-gated K+ channels
c. (iii)Is caused by open voltage-gated Na+ channels
d. (iv)Is caused by the slow closing of voltage-gated K+ channels
8. The concentration of ions in the chemical environment surrounding the nerurons must
be tightly regulated for neurons to function properly. Which of the following cells in the
CNS is most responsible for this?
a. Satellite cells
b. Astrocytes
c. Schwann cells
d. Oligodendrocytes
BIOL 2457 Test 3
1. Beth touches a sharp object cries out in pain, but is unable to pull her hand away from
the object. In this situation, the neurons are the most likely reason she cannot
respond.
A) Sensory neurons
B) Sympathetic neurons
C) Parasympathetic
D) Somatic motor neurons
2. A major function of the neurons of the nervous system in communication that allows
our bodies to maintain homeostasis. In many cases exes reflexes will occur without our
awareness. Which function of the nervous system is bypasses during a reflex response?
A) Sensory function
B) Motor function
C) Integrative function
D) None; all functions occur in reflexes
3. The somatic, sympathetic, parasympathetic and enteric division of the nervous system
all play a role in the of the nervous system.
a) Sensory function
b) Integrative function
c) Motor function
d) Sensory and motor functions
4. Information sent from the dendrites to the , where an action potential may be
generated?
a) Cell body ( soma )
b) Axon terminal
c) Synaptic end bulb
d) Axon
5. A scientist discovers that a neuron does not have adequate stores of a neurotransmitter.
What part of the neuron is he observing?
a. The axon
b. The sympathetic terminals
c. The dendrites
d. The cell body
6. If the myelin serves to insulate an axon, decreasing the loss of electrical signal and
increasing speed of conduction, then which of the following statements accurately
predicts where myelin will have the largest effect?
a. Neurons with short axons that relay information of minor importance.
b. Neurons with short axons that relay critical information.
BIOL 2457 Test 3
, c. Neurons with long axons that relay information of minor importance.
d. Neurons with long axons that relay critical information.
7. Which statement is most accurate regarding the image below?
a. (i)Is the threshold that must be reached for the generation of an action potential.
b. (ii)is caused by open voltage-gated K+ channels
c. (iii)Is caused by open voltage-gated Na+ channels
d. (iv)Is caused by the slow closing of voltage-gated K+ channels
8. The concentration of ions in the chemical environment surrounding the nerurons must
be tightly regulated for neurons to function properly. Which of the following cells in the
CNS is most responsible for this?
a. Satellite cells
b. Astrocytes
c. Schwann cells
d. Oligodendrocytes
BIOL 2457 Test 3
