2/9/26, 8:36 AM Galen A&P NU-110 Exam 4 Exam Complete Test , Practice Questions, Verified Answer Key, and Study Guide for (Latest 2026 Editio…
Galen A&P NU-110 Exam 4 Exam Complete Test ,
Practice Questions, Verified Answer Key, and
Study Guide for (Latest 2026 Edition)
Save
Terms in this set (237)
The Central Nervous System (CNS) Includes the brain and the spinal cord
The Peripheral Nervous System includes the nerves that connect the Central
(PNS) Nervous system with the rest of the body
2 parts of nervous tissue Glia Cells, and neurons.
Glia cell are support cells of the brain
astrocytes, microglia, oligodendrocytes
Astrocytes makes the blood brain barrier. Connects to blood
vessels and acts as the gate keeper. Does allot with
metabolism, mostly of medication
Microglia immune cells of the brain. Migrate to the area of
injury, it covers it and cleans it up. It does not have
allot of T or B cells.
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,2/9/26, 8:36 AM Galen A&P NU-110 Exam 4 Exam Complete Test , Practice Questions, Verified Answer Key, and Study Guide for (Latest 2026 Editio…
Oligodendrocytes secretes allot of myelin. It is important for the
neuron. Actually wraps around portions of the
neuron.
Myelin increases the speed of the neuron. It is the white
matter of the brain and the spinal cord.
Neurons and Glia can grow back but they grow back very slowly.
neuron information only travels in one direction. That way there is no traffic jams or
mixed signals.
Dendrites where the information comes in to the neuron
Cell Body houses the nucleus and other cell structures.
Receives signal from the dendrites.
Axon gets information from the cell body
Axon Terminals Get information from the axon. Is where we release
all of the neuron transmitters.
Myelin Not all neurons have ______ but those that do move
information quickly
Afferent Neurons are sensory neurons. Carries information to the
Central nervous system.
Interneurons makes connections within the central nervous
system.
Efferent Neurons. Motor neurons. Carry information away from the
Central nervous system and towards the periphery.
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, 2/9/26, 8:36 AM Galen A&P NU-110 Exam 4 Exam Complete Test , Practice Questions, Verified Answer Key, and Study Guide for (Latest 2026 Editio…
Neurons and Glia are all intermingled together
Action Potential or Nerve impulse is the electrical signal. Can only happen in the
neuron
Neuron can only be in one of 3 Polarization, Depolarization, Repolarization
states
Polarization State. is the resting State. The inside is more negative.
Potassium is being moved out. and the inside of the
cell becomes more negative.
Depolarization Is a stimulated neuron. The inside of the cell
becomes more positive. There is allot of Sodium to
come into the cell.
Repolarization returns to resting. Charge goes back to negative
inside. Puts all of the ions back to where they are
supposed to be. So potassium moves out. Back to
negative charge on the inside.
Refectory Period. Cell is not able to respond to another action
potential until repolarization is complete and
everything is back to where it is supposed to be.
Make myelin (2 cells) are schwann cells and oligodendrocytes.
Schwann cell is located in the peripheral nervous system. makes myelin
In a myelinated nerve the nerve impulse jumps from node to node.
Saltatory Conduction it is the jumping of the nerve impulse in the
myelinated nerve.
https://quizlet.com/1141380407/galen-ap-nu-110-exam-4-exam-complete-test-practice-questions-verified-answer-key-and-study-guide-for-latest-2026… 3/22
Galen A&P NU-110 Exam 4 Exam Complete Test ,
Practice Questions, Verified Answer Key, and
Study Guide for (Latest 2026 Edition)
Save
Terms in this set (237)
The Central Nervous System (CNS) Includes the brain and the spinal cord
The Peripheral Nervous System includes the nerves that connect the Central
(PNS) Nervous system with the rest of the body
2 parts of nervous tissue Glia Cells, and neurons.
Glia cell are support cells of the brain
astrocytes, microglia, oligodendrocytes
Astrocytes makes the blood brain barrier. Connects to blood
vessels and acts as the gate keeper. Does allot with
metabolism, mostly of medication
Microglia immune cells of the brain. Migrate to the area of
injury, it covers it and cleans it up. It does not have
allot of T or B cells.
https://quizlet.com/1141380407/galen-ap-nu-110-exam-4-exam-complete-test-practice-questions-verified-answer-key-and-study-guide-for-latest-2026… 1/22
,2/9/26, 8:36 AM Galen A&P NU-110 Exam 4 Exam Complete Test , Practice Questions, Verified Answer Key, and Study Guide for (Latest 2026 Editio…
Oligodendrocytes secretes allot of myelin. It is important for the
neuron. Actually wraps around portions of the
neuron.
Myelin increases the speed of the neuron. It is the white
matter of the brain and the spinal cord.
Neurons and Glia can grow back but they grow back very slowly.
neuron information only travels in one direction. That way there is no traffic jams or
mixed signals.
Dendrites where the information comes in to the neuron
Cell Body houses the nucleus and other cell structures.
Receives signal from the dendrites.
Axon gets information from the cell body
Axon Terminals Get information from the axon. Is where we release
all of the neuron transmitters.
Myelin Not all neurons have ______ but those that do move
information quickly
Afferent Neurons are sensory neurons. Carries information to the
Central nervous system.
Interneurons makes connections within the central nervous
system.
Efferent Neurons. Motor neurons. Carry information away from the
Central nervous system and towards the periphery.
https://quizlet.com/1141380407/galen-ap-nu-110-exam-4-exam-complete-test-practice-questions-verified-answer-key-and-study-guide-for-latest-2026… 2/22
, 2/9/26, 8:36 AM Galen A&P NU-110 Exam 4 Exam Complete Test , Practice Questions, Verified Answer Key, and Study Guide for (Latest 2026 Editio…
Neurons and Glia are all intermingled together
Action Potential or Nerve impulse is the electrical signal. Can only happen in the
neuron
Neuron can only be in one of 3 Polarization, Depolarization, Repolarization
states
Polarization State. is the resting State. The inside is more negative.
Potassium is being moved out. and the inside of the
cell becomes more negative.
Depolarization Is a stimulated neuron. The inside of the cell
becomes more positive. There is allot of Sodium to
come into the cell.
Repolarization returns to resting. Charge goes back to negative
inside. Puts all of the ions back to where they are
supposed to be. So potassium moves out. Back to
negative charge on the inside.
Refectory Period. Cell is not able to respond to another action
potential until repolarization is complete and
everything is back to where it is supposed to be.
Make myelin (2 cells) are schwann cells and oligodendrocytes.
Schwann cell is located in the peripheral nervous system. makes myelin
In a myelinated nerve the nerve impulse jumps from node to node.
Saltatory Conduction it is the jumping of the nerve impulse in the
myelinated nerve.
https://quizlet.com/1141380407/galen-ap-nu-110-exam-4-exam-complete-test-practice-questions-verified-answer-key-and-study-guide-for-latest-2026… 3/22
