Biod 152 FINAL Exam-Questions and Answers
|Latest 2026 Revised Update|100% Correct.
This is a bundle of axons found in the peripheral nervous system.
Nerve
This part of the autonomic system increases digestion.
Parasympathetic
The dorsal root of a nerve contains what type of neurons?
Sensory (afferent)
This part of a neuron conducts nerve impulses away from the cell body.
Axon
A neuron going to the bicep of the forearm is part of the:
A. central nervous system
B. peripheral nervous system
C. Autonomic system
D. Somatic system
E. A&C
F. B&D
F. B&D
The neuron pictured, below, is best described as:
A. Bipolar
,B. Multipolar
C. Unipolar
D. Pseudounipolar
B. Multipolar
True or false: Neurons do not physically touch one another.
True
Describe the synthesis and storage of neurotransmitters.
The neuron cell body manufactures neurotransmitters, which are stored in secretory vesicles at
the end of axon terminals
An efferent neuron carries information:
A. From the central to the peripheral nervous system
B. From the peripheral to the central nervous system
C. Within the central nervous system
D. Within the peripheral nervous system
A. From the central to the peripheral nervous system
A postsynaptic neuron would be found:
A. before the synapse
B. after the synapse
C. inside the synapse
D. Only in the central nervous system
B. after the synapse
,What is the location and function of Satellite cells?
Location: peripheral nervous system (PNS)
Function: Regulation of environment of neuron cell bodies
A patient's spinal cord was severed in a car accident. Would the patient be expected to
regrow axons in their spinal cord? Why or why not?
No, only the peripheral system axons are capable of regeneration. The spinal cord is the central
nervous system
Name and describe what is occurring in the neuron cell membrane in section 4 of the
diagram. Include the charge of the membrane during this phase.
This is phase 4: afterpolarization (hyperpolarization), the potassium gates are slow to clse and
that results in an undershoot of the potential, the voltage will drop below -70mV and the return to
the restign state beings.
At rest, a neuron plasma membrane is:
A. -70 mV
B. +40 mV
C. Hyperpolarized
D. Depolarized
A. -70 mV
Which of the following is false concerning the sodium-potassium pump?
A. it maintains the resting phase of an axon
B. For every three sodium ions pumped out, two potassium ions are pumped in
, C. it must remain in constant operation to maintain the resting state
D. The overall effect is a negative charge on the outside of the membrane
D. The overall effect is a negative charge on the outside of the membrane
True or false: A sensory neuron is signaling the body of extreme pain. This means that the
strength of the action potential is greater than usual. Explain your reasoning
False, there is no variation in the strength of action potentials. (It is an all-or-nothing response).
There is variation in the number and frequency of neurons firing
Which of the following statements is false concerning the neuromuscular junction?
A. Sodium ions release from the presynaptic motor neuron
B. Calcium ions release from the sarcoplasmic reticulum to cause muscle contraction
C. Sodium channels open on the muscle fibers in response to the neurotransmitter
D. The NMJ is found in the peripheral nervous system
A. Sodium ions release from the presynaptic motor neuron
What prevents continuous stimulation of a nerve synapse and how is this accomplished?
The short extension of neurotransmitters in the synpase prevents coninous stimulation. Some
synapses contain enzymes that rapidly inactivate neurotransmitters and other synpases rapidly
absord the neurotransmitters.
What neurotransmitter is found at the neuromuscular junctions?
Acetylcholine (ACh)
True or False: Action potentials travel in multiple directions within the same neuron.
|Latest 2026 Revised Update|100% Correct.
This is a bundle of axons found in the peripheral nervous system.
Nerve
This part of the autonomic system increases digestion.
Parasympathetic
The dorsal root of a nerve contains what type of neurons?
Sensory (afferent)
This part of a neuron conducts nerve impulses away from the cell body.
Axon
A neuron going to the bicep of the forearm is part of the:
A. central nervous system
B. peripheral nervous system
C. Autonomic system
D. Somatic system
E. A&C
F. B&D
F. B&D
The neuron pictured, below, is best described as:
A. Bipolar
,B. Multipolar
C. Unipolar
D. Pseudounipolar
B. Multipolar
True or false: Neurons do not physically touch one another.
True
Describe the synthesis and storage of neurotransmitters.
The neuron cell body manufactures neurotransmitters, which are stored in secretory vesicles at
the end of axon terminals
An efferent neuron carries information:
A. From the central to the peripheral nervous system
B. From the peripheral to the central nervous system
C. Within the central nervous system
D. Within the peripheral nervous system
A. From the central to the peripheral nervous system
A postsynaptic neuron would be found:
A. before the synapse
B. after the synapse
C. inside the synapse
D. Only in the central nervous system
B. after the synapse
,What is the location and function of Satellite cells?
Location: peripheral nervous system (PNS)
Function: Regulation of environment of neuron cell bodies
A patient's spinal cord was severed in a car accident. Would the patient be expected to
regrow axons in their spinal cord? Why or why not?
No, only the peripheral system axons are capable of regeneration. The spinal cord is the central
nervous system
Name and describe what is occurring in the neuron cell membrane in section 4 of the
diagram. Include the charge of the membrane during this phase.
This is phase 4: afterpolarization (hyperpolarization), the potassium gates are slow to clse and
that results in an undershoot of the potential, the voltage will drop below -70mV and the return to
the restign state beings.
At rest, a neuron plasma membrane is:
A. -70 mV
B. +40 mV
C. Hyperpolarized
D. Depolarized
A. -70 mV
Which of the following is false concerning the sodium-potassium pump?
A. it maintains the resting phase of an axon
B. For every three sodium ions pumped out, two potassium ions are pumped in
, C. it must remain in constant operation to maintain the resting state
D. The overall effect is a negative charge on the outside of the membrane
D. The overall effect is a negative charge on the outside of the membrane
True or false: A sensory neuron is signaling the body of extreme pain. This means that the
strength of the action potential is greater than usual. Explain your reasoning
False, there is no variation in the strength of action potentials. (It is an all-or-nothing response).
There is variation in the number and frequency of neurons firing
Which of the following statements is false concerning the neuromuscular junction?
A. Sodium ions release from the presynaptic motor neuron
B. Calcium ions release from the sarcoplasmic reticulum to cause muscle contraction
C. Sodium channels open on the muscle fibers in response to the neurotransmitter
D. The NMJ is found in the peripheral nervous system
A. Sodium ions release from the presynaptic motor neuron
What prevents continuous stimulation of a nerve synapse and how is this accomplished?
The short extension of neurotransmitters in the synpase prevents coninous stimulation. Some
synapses contain enzymes that rapidly inactivate neurotransmitters and other synpases rapidly
absord the neurotransmitters.
What neurotransmitter is found at the neuromuscular junctions?
Acetylcholine (ACh)
True or False: Action potentials travel in multiple directions within the same neuron.
