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PSYC289 Unit 3 Questions and Answers
(100% Correct Answers) Already Graded
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What are glial cells? [ ANS: ] Supportive cells in the nervous
system that provide nutrients, remove waste, and aid in
myelination.
What is cerebrospinal fluid (CSF)? [ ANS: ] A fluid that cushions the
brain and spinal cord, providing protection and nutrient transport.
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What is the function of the soma in a neuron? [ ANS: ] The cell
body, which contains the nucleus and maintains cell function.
What do dendrites do? [ ANS: ] receive information
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: What is the function of an axon? [ ANS: ] conducts nerve
impulses away from the soma
What happens at the axon terminals? [ ANS: ] They release
neurotransmitters to communicate with other neurons.
What is a synapse? [ ANS: ] The gap between neurons where
neurotransmission occurs.
What is the purpose of the myelin sheath? [ ANS: ] It insulates
axons, speeding up neural impulses.
What is resting potential in a neuron? [ ANS: ] -70 millivolts,
negative charge when the cell is inactive
What is action potential? [ ANS: ] A rapid electrical signal that
travels along an axon when a neuron fires.
What does the all-or-none law state? [ ANS: ] A neuron either fires
at full strength or not at all.
For Expert help and assignment solutions, +254707240657
PSYC289 Unit 3 Questions and Answers
(100% Correct Answers) Already Graded
A+
What are glial cells? [ ANS: ] Supportive cells in the nervous
system that provide nutrients, remove waste, and aid in
myelination.
What is cerebrospinal fluid (CSF)? [ ANS: ] A fluid that cushions the
brain and spinal cord, providing protection and nutrient transport.
© 2025 Assignment Expert
What is the function of the soma in a neuron? [ ANS: ] The cell
body, which contains the nucleus and maintains cell function.
What do dendrites do? [ ANS: ] receive information
Guru01 - Stuvia
: What is the function of an axon? [ ANS: ] conducts nerve
impulses away from the soma
What happens at the axon terminals? [ ANS: ] They release
neurotransmitters to communicate with other neurons.
What is a synapse? [ ANS: ] The gap between neurons where
neurotransmission occurs.
What is the purpose of the myelin sheath? [ ANS: ] It insulates
axons, speeding up neural impulses.
What is resting potential in a neuron? [ ANS: ] -70 millivolts,
negative charge when the cell is inactive
What is action potential? [ ANS: ] A rapid electrical signal that
travels along an axon when a neuron fires.
What does the all-or-none law state? [ ANS: ] A neuron either fires
at full strength or not at all.
