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NSC 3361 Exam 1 Questions and Correct
Answers
unipolar neurons Ans: transfer electrical impulses fastest & at
greatest distances
-receptive pole & output zone
-sensory nervous system
EX: Pain
bipolar neurons Ans: 2 extension of one axon & 1 dendrite
-neurons primarily found in retina of eyes
-rare
Function: sensory
multipolar neurons Ans: 1 axon, many different dendrites
-most numerous neuron
-Function: motor & interneurons
flow of info thru neuron Ans: iieChO
1. input zone
2. integration zone
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3. conduction zone
4. output zone
input zone Ans: FLOW OF INFO THRU NEURON
DENDRITES
where info 1st received to neurons thru dendrites
integration zone Ans: FLOW OF INFO THRU NEURON
AXON HILLOCK
where info is compiled & transmitted thru axon
conduction zone Ans: FLOW OF INFO THRU NEURON
AXON
path of which info is transmitted thru axon
output zone Ans: FLOW OF INFO THRU NEURON
TERMINALS
where info is transferred to other cells
dendrites Ans: BEGINNING of neuron
-CONVERGE to make 1 signal
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cell body Ans: integrates incoming signals & generates outgoing
signal to axon
axon Ans: passes electrical signals to dendrites of another cell or
to an effector cell
-thicker = faster
-1 axon/neuron
glial cells Ans: Different types
1. astrocytes
2. microglia
3. ependymal
4. oligodendryocytes
astrocytes Ans: GLIAL CELL
supportive cells in brain that fills in spaces
-store, absorb, release chemicals
-most numerous glial cell in CNS
microglia Ans: GLIAL CELL
clean up dying neurons & glia
-PHAGOCYTES
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-brain & spinal cord only
ependymal cells Ans: GLIAL CELL
PHASE 1: guiding embryonic cells during development
PHASE 2: lining ventricles & secreting CSF
-VENTRICULAR SYSTEM
oligodendrocytes Ans: GLIAL CELL
Wraps around many axons in order to coat them with myelin
sheaths in CNS
-increases speed & conduction
-can cover 3-4 axons
MS (multiple sclerosis) Ans: -attack on MYELIN from immune
system
-disease that results with failure of oligodendrocytes to cover
axons w/ myelin
(kill 1 oligodendrocyte = kill 3-4 axons)
-recovery never complete
-goes on for decades
dendritic spines Ans: PURPOSE: increase surface area
© 2025 All rights reserved
NSC 3361 Exam 1 Questions and Correct
Answers
unipolar neurons Ans: transfer electrical impulses fastest & at
greatest distances
-receptive pole & output zone
-sensory nervous system
EX: Pain
bipolar neurons Ans: 2 extension of one axon & 1 dendrite
-neurons primarily found in retina of eyes
-rare
Function: sensory
multipolar neurons Ans: 1 axon, many different dendrites
-most numerous neuron
-Function: motor & interneurons
flow of info thru neuron Ans: iieChO
1. input zone
2. integration zone
© 2025 All rights reserved
, 2 | Page
3. conduction zone
4. output zone
input zone Ans: FLOW OF INFO THRU NEURON
DENDRITES
where info 1st received to neurons thru dendrites
integration zone Ans: FLOW OF INFO THRU NEURON
AXON HILLOCK
where info is compiled & transmitted thru axon
conduction zone Ans: FLOW OF INFO THRU NEURON
AXON
path of which info is transmitted thru axon
output zone Ans: FLOW OF INFO THRU NEURON
TERMINALS
where info is transferred to other cells
dendrites Ans: BEGINNING of neuron
-CONVERGE to make 1 signal
© 2025 All rights reserved
, 3 | Page
cell body Ans: integrates incoming signals & generates outgoing
signal to axon
axon Ans: passes electrical signals to dendrites of another cell or
to an effector cell
-thicker = faster
-1 axon/neuron
glial cells Ans: Different types
1. astrocytes
2. microglia
3. ependymal
4. oligodendryocytes
astrocytes Ans: GLIAL CELL
supportive cells in brain that fills in spaces
-store, absorb, release chemicals
-most numerous glial cell in CNS
microglia Ans: GLIAL CELL
clean up dying neurons & glia
-PHAGOCYTES
© 2025 All rights reserved
, 4 | Page
-brain & spinal cord only
ependymal cells Ans: GLIAL CELL
PHASE 1: guiding embryonic cells during development
PHASE 2: lining ventricles & secreting CSF
-VENTRICULAR SYSTEM
oligodendrocytes Ans: GLIAL CELL
Wraps around many axons in order to coat them with myelin
sheaths in CNS
-increases speed & conduction
-can cover 3-4 axons
MS (multiple sclerosis) Ans: -attack on MYELIN from immune
system
-disease that results with failure of oligodendrocytes to cover
axons w/ myelin
(kill 1 oligodendrocyte = kill 3-4 axons)
-recovery never complete
-goes on for decades
dendritic spines Ans: PURPOSE: increase surface area
© 2025 All rights reserved
