Galen A&P NU-110 Exam 4 Exam Complete Test , Practice
Questions, Verified Answer Key, and Study Guide for (Latest
2026 Edition)
The Central Nervous System (CNS) - (ANSWERS)Includes the brain and
the spinal cord
The Peripheral Nervous System (PNS) - (ANSWERS)includes the nerves
that connect the Central Nervous system with the rest of the body
2 parts of nervous tissue - (ANSWERS)Glia Cells, and neurons.
Glia cell - (ANSWERS)are support cells of the brain
Astrocytes, microglia, oligodendrocytes
Astrocytes - (ANSWERS)makes the blood brain barrier. Connects to blood
vessels and acts as the gate keeper. Does allot with metabolism, mostly of
medication
Microglia - (ANSWERS)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.
Oligodendrocytes - (ANSWERS)secretes allot of myelin. It is important for
the neuron. Actually wraps around portions of the neuron.
,Galen A&P NU-110 Exam 4 Exam Complete Test , Practice
Questions, Verified Answer Key, and Study Guide for (Latest
2026 Edition)
Myelin - (ANSWERS)increases the speed of the neuron. It is the white
matter of the brain and the spinal cord.
Neurons and Glia can grow back - (ANSWERS)but they grow back very
slowly.
Neuron information only travels - (ANSWERS)in one direction. That way
there is no traffic jams or mixed signals.
Dendrites - (ANSWERS)where the information comes in to the neuron
Cell Body - (ANSWERS)houses the nucleus and other cell structures.
Receives signal from the dendrites.
Axon - (ANSWERS)gets information from the cell body
Axon Terminals - (ANSWERS)Get information from the axon. Is where we
release all of the neuron transmitters.
,Galen A&P NU-110 Exam 4 Exam Complete Test , Practice
Questions, Verified Answer Key, and Study Guide for (Latest
2026 Edition)
Myelin - (ANSWERS)Not all neurons have ______ but those that do move
information quickly
Afferent Neurons - (ANSWERS)are sensory neurons. Carries information
to the Central nervous system.
Interneurons - (ANSWERS)makes connections within the central nervous
system.
Efferent Neurons. - (ANSWERS)Motor neurons. Carry information away
from the Central nervous system and towards the periphery.
Neurons and Glia are all - (ANSWERS)intermingled together
Action Potential or Nerve impulse - (ANSWERS)is the electrical signal.
Can only happen in the neuron
Neuron can only be in one of 3 states - (ANSWERS)Polarization,
, Galen A&P NU-110 Exam 4 Exam Complete Test , Practice
Questions, Verified Answer Key, and Study Guide for (Latest
2026 Edition)
Depolarization, Repolarization
Polarization State. - (ANSWERS)is the resting State. The inside is more
negative. Potassium is being moved out. And the inside of the cell becomes
more negative.
Depolarization - (ANSWERS)Is a stimulated neuron. The inside of the cell
becomes more positive. There is allot of Sodium to come into the cell.
Repolarization - (ANSWERS)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. - (ANSWERS)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) - (ANSWERS)are schwann cells and
oligodendrocytes.
Questions, Verified Answer Key, and Study Guide for (Latest
2026 Edition)
The Central Nervous System (CNS) - (ANSWERS)Includes the brain and
the spinal cord
The Peripheral Nervous System (PNS) - (ANSWERS)includes the nerves
that connect the Central Nervous system with the rest of the body
2 parts of nervous tissue - (ANSWERS)Glia Cells, and neurons.
Glia cell - (ANSWERS)are support cells of the brain
Astrocytes, microglia, oligodendrocytes
Astrocytes - (ANSWERS)makes the blood brain barrier. Connects to blood
vessels and acts as the gate keeper. Does allot with metabolism, mostly of
medication
Microglia - (ANSWERS)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.
Oligodendrocytes - (ANSWERS)secretes allot of myelin. It is important for
the neuron. Actually wraps around portions of the neuron.
,Galen A&P NU-110 Exam 4 Exam Complete Test , Practice
Questions, Verified Answer Key, and Study Guide for (Latest
2026 Edition)
Myelin - (ANSWERS)increases the speed of the neuron. It is the white
matter of the brain and the spinal cord.
Neurons and Glia can grow back - (ANSWERS)but they grow back very
slowly.
Neuron information only travels - (ANSWERS)in one direction. That way
there is no traffic jams or mixed signals.
Dendrites - (ANSWERS)where the information comes in to the neuron
Cell Body - (ANSWERS)houses the nucleus and other cell structures.
Receives signal from the dendrites.
Axon - (ANSWERS)gets information from the cell body
Axon Terminals - (ANSWERS)Get information from the axon. Is where we
release all of the neuron transmitters.
,Galen A&P NU-110 Exam 4 Exam Complete Test , Practice
Questions, Verified Answer Key, and Study Guide for (Latest
2026 Edition)
Myelin - (ANSWERS)Not all neurons have ______ but those that do move
information quickly
Afferent Neurons - (ANSWERS)are sensory neurons. Carries information
to the Central nervous system.
Interneurons - (ANSWERS)makes connections within the central nervous
system.
Efferent Neurons. - (ANSWERS)Motor neurons. Carry information away
from the Central nervous system and towards the periphery.
Neurons and Glia are all - (ANSWERS)intermingled together
Action Potential or Nerve impulse - (ANSWERS)is the electrical signal.
Can only happen in the neuron
Neuron can only be in one of 3 states - (ANSWERS)Polarization,
, Galen A&P NU-110 Exam 4 Exam Complete Test , Practice
Questions, Verified Answer Key, and Study Guide for (Latest
2026 Edition)
Depolarization, Repolarization
Polarization State. - (ANSWERS)is the resting State. The inside is more
negative. Potassium is being moved out. And the inside of the cell becomes
more negative.
Depolarization - (ANSWERS)Is a stimulated neuron. The inside of the cell
becomes more positive. There is allot of Sodium to come into the cell.
Repolarization - (ANSWERS)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. - (ANSWERS)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) - (ANSWERS)are schwann cells and
oligodendrocytes.
