Portage Learning A&P II: Final Exam
Question and Answer
This is a collection of cell bodies found in the
peripheral nervous system. - correct answer
✅Ganglia
This part of the autonomic system increases
digestion. - correct answer ✅Parasympathetic
The ventral root of a nerve contains what type of
neurons? - correct answer ✅Motor (Efferent)
This part of a neuron conducts nerve impulses away
from the cell body. - correct answer ✅Axon
An interneuron inside the spinal cord is part of the: -
correct answer ✅Central nervous system
Describe the synthesis and storage of
neurotransmitters. - correct answer ✅The neuron
cell body manufactures neurotransmitters, which are
stored in secretory vesicles at the end of axon
terminals.
,Portage Learning A&P II: Final Exam
Question and Answer
An afferent neuron carries information: - correct
answer ✅From the peripheral to the central nervous
system
What is the location and function of Astrocytes? -
correct answer ✅Astrocytes form the blood/brain
barrier, are found in the brain, and are part of the
CNS
A patient's left thumb was severed in a cooking
accident and then reattached during surgery. Would
the patient be expected to regrow axons in their
thumb? Why or why not? - correct answer ✅Yes;
Peripheral nerves can regenerate the length of the
axon through axonal regeneration because of the
growth of Schwann cells ahead of the axon.
Name and describe what is occurring in the neuron
cell membrane in section 2 of the diagram. Include
the charge of the membrane during this phase. -
correct answer ✅Depolarization: The sodium gates
open and sodium rushes into the axon during the
depolarization phase of the action potential.
Voltage travels past zero and then on up to +40 mV.
,Portage Learning A&P II: Final Exam
Question and Answer
At rest, a neuron plasma membrane is: - correct
answer ✅-70mV
Which of the following is false concerning the
sodium-potassium pump? - correct answer ✅The
overall effect is a negative charge on the outside of
the membrane.
True or false: A sensory neuron is signaling the body
of a light touch. This means that the strength of the
action potential is weaker than usual. Explain your
reasoning. - correct answer ✅False. The action
potential is always the same. The frequency and
number of nuerons activated change the increase in
intensity.
Which of the following statements is false concerning
the neuromuscular junction? - correct answer
✅Ach is released from the presynaptic motor neuron
to cause an action potential in the muscle fiber.
How is a message sent from one neuron to another? -
correct answer ✅A signal travels from the cell
body through the axon and releases
neurotransmitters into the synapse. These
, Portage Learning A&P II: Final Exam
Question and Answer
nuerotransmitters bind with receptor that carry the
message to the dendrite of the next neuron, and the
process begins again.
What neurotransmitter helps regulate emotional
responses and muscle tone? - correct answer
✅Dopamine
In a reflex, the ____________ neuron conducts nerve
impulses along a pathway towards the central
nervous system. - correct answer ✅Sensory
(afferent)
This part of a reflex is inside the CNS, made up of
one or more synapses. - correct answer ✅The
integration center
What is true about the stretch reflex? - correct
answer ✅The muscle spindle detects stretch within
the muscle.
What is true about the flexor withdrawal reflex? -
correct answer ✅It involves excitatory
interneurons.
Question and Answer
This is a collection of cell bodies found in the
peripheral nervous system. - correct answer
✅Ganglia
This part of the autonomic system increases
digestion. - correct answer ✅Parasympathetic
The ventral root of a nerve contains what type of
neurons? - correct answer ✅Motor (Efferent)
This part of a neuron conducts nerve impulses away
from the cell body. - correct answer ✅Axon
An interneuron inside the spinal cord is part of the: -
correct answer ✅Central nervous system
Describe the synthesis and storage of
neurotransmitters. - correct answer ✅The neuron
cell body manufactures neurotransmitters, which are
stored in secretory vesicles at the end of axon
terminals.
,Portage Learning A&P II: Final Exam
Question and Answer
An afferent neuron carries information: - correct
answer ✅From the peripheral to the central nervous
system
What is the location and function of Astrocytes? -
correct answer ✅Astrocytes form the blood/brain
barrier, are found in the brain, and are part of the
CNS
A patient's left thumb was severed in a cooking
accident and then reattached during surgery. Would
the patient be expected to regrow axons in their
thumb? Why or why not? - correct answer ✅Yes;
Peripheral nerves can regenerate the length of the
axon through axonal regeneration because of the
growth of Schwann cells ahead of the axon.
Name and describe what is occurring in the neuron
cell membrane in section 2 of the diagram. Include
the charge of the membrane during this phase. -
correct answer ✅Depolarization: The sodium gates
open and sodium rushes into the axon during the
depolarization phase of the action potential.
Voltage travels past zero and then on up to +40 mV.
,Portage Learning A&P II: Final Exam
Question and Answer
At rest, a neuron plasma membrane is: - correct
answer ✅-70mV
Which of the following is false concerning the
sodium-potassium pump? - correct answer ✅The
overall effect is a negative charge on the outside of
the membrane.
True or false: A sensory neuron is signaling the body
of a light touch. This means that the strength of the
action potential is weaker than usual. Explain your
reasoning. - correct answer ✅False. The action
potential is always the same. The frequency and
number of nuerons activated change the increase in
intensity.
Which of the following statements is false concerning
the neuromuscular junction? - correct answer
✅Ach is released from the presynaptic motor neuron
to cause an action potential in the muscle fiber.
How is a message sent from one neuron to another? -
correct answer ✅A signal travels from the cell
body through the axon and releases
neurotransmitters into the synapse. These
, Portage Learning A&P II: Final Exam
Question and Answer
nuerotransmitters bind with receptor that carry the
message to the dendrite of the next neuron, and the
process begins again.
What neurotransmitter helps regulate emotional
responses and muscle tone? - correct answer
✅Dopamine
In a reflex, the ____________ neuron conducts nerve
impulses along a pathway towards the central
nervous system. - correct answer ✅Sensory
(afferent)
This part of a reflex is inside the CNS, made up of
one or more synapses. - correct answer ✅The
integration center
What is true about the stretch reflex? - correct
answer ✅The muscle spindle detects stretch within
the muscle.
What is true about the flexor withdrawal reflex? -
correct answer ✅It involves excitatory
interneurons.
