NU110 Exam 3 | Integrated Human
Sciences Review| Questions & Answers|
Grade A+ | 100% Correct (Verified
Solutions)- Galen
The Central Nervous System (CNS)
- Correct Answer - Includes the brain and the spinal cord
The Peripheral Nervous System (PNS)
- Correct Answer - includes the nerves that connect the Central Nervous
system with the rest of the body
2 parts of nervous tissue
- Correct Answer - Glia Cells, and neurons.
Glia cell - Correct Answer - are support cells of the brain
astrocytes, microglia, oligodendrocytes
Astrocytes - Correct Answer - makes the blood brain barrier. Connects to
blood vessels and acts as the gate keeper. Does allot with metabolism,
mostly of medication
,Microglia - Correct Answer - 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 - Correct Answer - secretes allot of myelin. It is
important for the neuron. Actually wraps around portions of the neuron.
Myelin - Correct Answer - increases the speed of the neuron. It is the
white matter of the brain and the spinal cord.
Neurons and Glia can grow back - Correct Answer - but they grow back
very slowly.
neuron information only travels - Correct Answer - in one direction. That
way there is no traffic jams or mixed signals.
Dendrites - Correct Answer - where the information comes in to the
neuron
Cell Body - Correct Answer - houses the nucleus and other cell
structures. Receives signal from the dendrites.
Axon - Correct Answer - gets information from the cell body
,Axon Terminals - Correct Answer - Get information from the axon. Is
where we release all of the neuron transmitters.
Myelin - Correct Answer - Not all neurons have ______ but those that do
move information quickly
Afferent Neurons - Correct Answer - are sensory neurons. Carries
information to the Central nervous system.
Interneurons - Correct Answer - makes connections within the central
nervous system.
Efferent Neurons. - Correct Answer - Motor neurons. Carry information
away from the Central nervous system and towards the periphery.
Neurons and Glia are all - Correct Answer - intermingled together
Action Potential or Nerve impulse - Correct Answer - is the electrical
signal. Can only happen in the neuron
Neuron can only be in one of 3 states - Correct Answer - Polarization,
Depolarization, Repolarization
, Polarization State. - Correct Answer - is the resting State. The inside is
more negative. Potassium is being moved out. and the inside of the cell
becomes more negative.
Depolarization - Correct Answer - Is a stimulated neuron. The inside of
the cell becomes more positive. There is allot of Sodium to come into the
cell.
Repolarization - Correct Answer - 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. - Correct Answer - 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) - Correct Answer - are schwann cells and
oligodendrocytes.
Schwann cell is located in the - Correct Answer - peripheral nervous
system. makes myelin
In a myelinated nerve - Correct Answer - the nerve impulse jumps from
node to node.
Sciences Review| Questions & Answers|
Grade A+ | 100% Correct (Verified
Solutions)- Galen
The Central Nervous System (CNS)
- Correct Answer - Includes the brain and the spinal cord
The Peripheral Nervous System (PNS)
- Correct Answer - includes the nerves that connect the Central Nervous
system with the rest of the body
2 parts of nervous tissue
- Correct Answer - Glia Cells, and neurons.
Glia cell - Correct Answer - are support cells of the brain
astrocytes, microglia, oligodendrocytes
Astrocytes - Correct Answer - makes the blood brain barrier. Connects to
blood vessels and acts as the gate keeper. Does allot with metabolism,
mostly of medication
,Microglia - Correct Answer - 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 - Correct Answer - secretes allot of myelin. It is
important for the neuron. Actually wraps around portions of the neuron.
Myelin - Correct Answer - increases the speed of the neuron. It is the
white matter of the brain and the spinal cord.
Neurons and Glia can grow back - Correct Answer - but they grow back
very slowly.
neuron information only travels - Correct Answer - in one direction. That
way there is no traffic jams or mixed signals.
Dendrites - Correct Answer - where the information comes in to the
neuron
Cell Body - Correct Answer - houses the nucleus and other cell
structures. Receives signal from the dendrites.
Axon - Correct Answer - gets information from the cell body
,Axon Terminals - Correct Answer - Get information from the axon. Is
where we release all of the neuron transmitters.
Myelin - Correct Answer - Not all neurons have ______ but those that do
move information quickly
Afferent Neurons - Correct Answer - are sensory neurons. Carries
information to the Central nervous system.
Interneurons - Correct Answer - makes connections within the central
nervous system.
Efferent Neurons. - Correct Answer - Motor neurons. Carry information
away from the Central nervous system and towards the periphery.
Neurons and Glia are all - Correct Answer - intermingled together
Action Potential or Nerve impulse - Correct Answer - is the electrical
signal. Can only happen in the neuron
Neuron can only be in one of 3 states - Correct Answer - Polarization,
Depolarization, Repolarization
, Polarization State. - Correct Answer - is the resting State. The inside is
more negative. Potassium is being moved out. and the inside of the cell
becomes more negative.
Depolarization - Correct Answer - Is a stimulated neuron. The inside of
the cell becomes more positive. There is allot of Sodium to come into the
cell.
Repolarization - Correct Answer - 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. - Correct Answer - 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) - Correct Answer - are schwann cells and
oligodendrocytes.
Schwann cell is located in the - Correct Answer - peripheral nervous
system. makes myelin
In a myelinated nerve - Correct Answer - the nerve impulse jumps from
node to node.
