Podcast
Questions and Answers
What type of neuron is primarily found in the central nervous system (CNS)?
What type of neuron is primarily found in the central nervous system (CNS)?
- Unipolar
- Pseudounipolar
- Bipolar
- Multipolar (correct)
Which structure of a neuron is responsible for transmitting information away from the cell body?
Which structure of a neuron is responsible for transmitting information away from the cell body?
- Dendrite
- Synapse
- Axon (correct)
- Cell body
Which type of glial cell is involved in the formation of myelin?
Which type of glial cell is involved in the formation of myelin?
- Astrocytes
- Oligodendrocytes (correct)
- Microglia
- Ependymal cells
What is the primary role of sensory neurons?
What is the primary role of sensory neurons?
What distinguishes glial cells from neurons?
What distinguishes glial cells from neurons?
The process of converting stimuli into signals is primarily performed by which cells?
The process of converting stimuli into signals is primarily performed by which cells?
Which of the following statements is true regarding action potentials?
Which of the following statements is true regarding action potentials?
What is the primary function of oligodendrocytes in the nervous system?
What is the primary function of oligodendrocytes in the nervous system?
What primarily consists of cell bodies in the nervous system?
What primarily consists of cell bodies in the nervous system?
What is the role of myelin sheaths in nerve fibers?
What is the role of myelin sheaths in nerve fibers?
What is the typical resting membrane potential (RMP) in nerve cells?
What is the typical resting membrane potential (RMP) in nerve cells?
Where are the cell bodies of sensory neurons located?
Where are the cell bodies of sensory neurons located?
What maintains the resting membrane potential (RMP) in a cell?
What maintains the resting membrane potential (RMP) in a cell?
What causes the faster transmission of action potentials in myelinated fibers?
What causes the faster transmission of action potentials in myelinated fibers?
What is the primary component of the myelin sheath in the central nervous system (CNS)?
What is the primary component of the myelin sheath in the central nervous system (CNS)?
What is the primary function of glial cells wrapped around an axon?
What is the primary function of glial cells wrapped around an axon?
What is the primary effect of the influx of Ca2+ during an action potential?
What is the primary effect of the influx of Ca2+ during an action potential?
Which process is responsible for the inactivation of neurotransmitters in the synaptic cleft?
Which process is responsible for the inactivation of neurotransmitters in the synaptic cleft?
What type of synapse results in hyperpolarization of the postsynaptic membrane?
What type of synapse results in hyperpolarization of the postsynaptic membrane?
For a postsynaptic potential to reach the threshold required for an action potential, what is generally necessary?
For a postsynaptic potential to reach the threshold required for an action potential, what is generally necessary?
What is the role of acetylcholine esterase in synaptic transmission?
What is the role of acetylcholine esterase in synaptic transmission?
What determines whether a neuron will respond to an incoming impulse?
What determines whether a neuron will respond to an incoming impulse?
Which mechanism allows neurotransmitters to be recycled after they are used?
Which mechanism allows neurotransmitters to be recycled after they are used?
What characterizes excitatory postsynaptic potentials (EPSP)?
What characterizes excitatory postsynaptic potentials (EPSP)?
What is the primary role of the Na+/K+ pump in maintaining the resting membrane potential (RMP)?
What is the primary role of the Na+/K+ pump in maintaining the resting membrane potential (RMP)?
What initiates the opening of voltage-gated ion channels during the action potential process?
What initiates the opening of voltage-gated ion channels during the action potential process?
What is the term for the period during which a neuron cannot be re-stimulated?
What is the term for the period during which a neuron cannot be re-stimulated?
During depolarization, which ion primarily rushes into the cell?
During depolarization, which ion primarily rushes into the cell?
How does myelination affect the conduction of action potentials in axons?
How does myelination affect the conduction of action potentials in axons?
Which of the following describes the 'all-or-none' rule of nerve cells?
Which of the following describes the 'all-or-none' rule of nerve cells?
What role do neurotransmitters play in synaptic transmission?
What role do neurotransmitters play in synaptic transmission?
What is hyperpolarization in the context of an action potential?
What is hyperpolarization in the context of an action potential?
Which ions are involved in the primary depolarization and repolarization phases of action potentials?
Which ions are involved in the primary depolarization and repolarization phases of action potentials?
What characterizes ligand-gated channels compared to voltage-gated channels?
What characterizes ligand-gated channels compared to voltage-gated channels?
What influences the velocity of nerve signal conduction?
What influences the velocity of nerve signal conduction?
Where do action potentials primarily occur in myelinated axons?
Where do action potentials primarily occur in myelinated axons?
What is one characteristic of excitatory neurotransmitters?
What is one characteristic of excitatory neurotransmitters?
In the case of the neuromuscular synapse, what neurotransmitter is primarily involved?
In the case of the neuromuscular synapse, what neurotransmitter is primarily involved?
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