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Questions and Answers
What is the function of the trigger (integrative) component of a neuron?
What is the function of the trigger (integrative) component of a neuron?
- Generating the action potential (correct)
- Receiving information to be propagated
- Propagating the action potential
- Releasing neurotransmitters
Which component of a neuron is responsible for propagating the action potential?
Which component of a neuron is responsible for propagating the action potential?
- Trigger component
- Conductile component (correct)
- Input component
- Output component
Which type of neuron has one process that gives rise to many branches?
Which type of neuron has one process that gives rise to many branches?
- Unipolar (correct)
- Pseudounipolar
- Multipolar
- Bipolar
What is the role of the nodes of Ranvier in the conduction of the action potential?
What is the role of the nodes of Ranvier in the conduction of the action potential?
Which component of a neuron is responsible for the release of neurotransmitters?
Which component of a neuron is responsible for the release of neurotransmitters?
What determines the intensity of the graded local signal produced by the input component of a neuron?
What determines the intensity of the graded local signal produced by the input component of a neuron?
Which type of neuron has two processes, a dendrite and an axon?
Which type of neuron has two processes, a dendrite and an axon?
What is the role of the input component of a neuron?
What is the role of the input component of a neuron?
Which type of neuron has two processes that both function as axons?
Which type of neuron has two processes that both function as axons?
Which type of neuron has an axon and many dendrites?
Which type of neuron has an axon and many dendrites?
Which cells produce myelin in the central nervous system?
Which cells produce myelin in the central nervous system?
Which cells produce myelin in the peripheral nervous system?
Which cells produce myelin in the peripheral nervous system?
Which cells line the ventricles and choroid plexus in the central nervous system?
Which cells line the ventricles and choroid plexus in the central nervous system?
Which cells respond to injury, infection, or disease in the central nervous system?
Which cells respond to injury, infection, or disease in the central nervous system?
Which cells become activated in diseases such as Multiple Sclerosis, AIDS-related dementia, Parkinson’s disease, and Alzheimer’s disease?
Which cells become activated in diseases such as Multiple Sclerosis, AIDS-related dementia, Parkinson’s disease, and Alzheimer’s disease?
Which cells influence embryonic growth or retraction of neurites?
Which cells influence embryonic growth or retraction of neurites?
Which cells regulate the concentration of potassium in the extracellular space?
Which cells regulate the concentration of potassium in the extracellular space?
Which cells possess neurotransmitter receptors?
Which cells possess neurotransmitter receptors?
Which cells form end feet on CNS capillaries inducing tight junctions that create the blood-brain barrier?
Which cells form end feet on CNS capillaries inducing tight junctions that create the blood-brain barrier?
Which cells support neuronal function and structure in the central nervous system?
Which cells support neuronal function and structure in the central nervous system?
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Study Notes
Neuron Function and Structure
- The trigger (integrative) component of a neuron receives and integrates signals from other neurons.
- The axon is responsible for propagating the action potential.
- Unipolar neurons have one process that gives rise to many branches.
Cell Functions and Characteristics
- Nodes of Ranvier are responsible for the rapid conduction of the action potential.
- The terminal buttons release neurotransmitters.
- The intensity of the graded local signal produced by the input component of a neuron is determined by the strength and number of synaptic inputs.
- Bipolar neurons have two processes, a dendrite and an axon.
- Multipolar neurons have an axon and many dendrites.
- Oligodendrocytes produce myelin in the central nervous system.
- Schwann cells produce myelin in the peripheral nervous system.
Glial Cells
- Ependymal cells line the ventricles and choroid plexus in the central nervous system.
- Microglia respond to injury, infection, or disease in the central nervous system.
- Microglia become activated in diseases such as Multiple Sclerosis, AIDS-related dementia, Parkinson’s disease, and Alzheimer’s disease.
- Astrocytes influence embryonic growth or retraction of neurites.
- Astrocytes regulate the concentration of potassium in the extracellular space.
- Astrocytes possess neurotransmitter receptors.
- Astrocytes form end feet on CNS capillaries inducing tight junctions that create the blood-brain barrier.
- Astrocytes support neuronal function and structure in the central nervous system.
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