Galen A&P NU-110 Exam 4 Questions &
Answers | 100 % Correct
The Central Nervous System (CNS)
Includes the brain and the spinal cord
The Peripheral Nervous System (PNS)
includes the nerves that connect the Central 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.
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.
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 states
Polarization, Depolarization, Repolarization
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
Answers | 100 % Correct
The Central Nervous System (CNS)
Includes the brain and the spinal cord
The Peripheral Nervous System (PNS)
includes the nerves that connect the Central 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.
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.
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 states
Polarization, Depolarization, Repolarization
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
