Podcast Beta
Questions and Answers
Which ion is highly concentrated outside of the cell?
Which ion is highly concentrated inside of the cell?
What is the resting membrane potential of a neuron?
Which cells create myelin in the central nervous system (CNS)?
Signup and view all the answers
What is the function of nodes of Ranvier?
Signup and view all the answers
What is the process called when an action potential 'jumps' from node of Ranvier to node of Ranvier?
Signup and view all the answers
What is the function of ligand-gated ion channels in the synapse?
Signup and view all the answers
Which type of stimuli can change the membrane potential (Vm) of a neuron?
Signup and view all the answers
What are the three key phases of an action potential?
Signup and view all the answers
What triggers the opening of voltage-gated sodium (Na+) channels?
Signup and view all the answers
What determines the speed of action potential propagation?
Signup and view all the answers
Which of the following is the resting membrane potential of a neuron?
Signup and view all the answers
Which ions are highly concentrated outside of the cell?
Signup and view all the answers
Which ions are highly concentrated inside of the cell?
Signup and view all the answers
What is the approximate value of the resting membrane potential (Vrest)?
Signup and view all the answers
What is the primary function of ligand-gated ion channels in the synapse?
Signup and view all the answers
What determines the speed of action potential propagation?
Signup and view all the answers
What are the three key phases of an action potential?
Signup and view all the answers
What triggers the opening of voltage-gated sodium (Na+) channels?
Signup and view all the answers
Which type of stimuli can change the membrane potential (Vm) of a neuron?
Signup and view all the answers
Which cells create myelin in the central nervous system (CNS)?
Signup and view all the answers
What triggers the opening of voltage-gated potassium (K+) channels during an action potential?
Signup and view all the answers
What is the purpose of the after-hyperpolarization (AHP) phase of an action potential?
Signup and view all the answers
What is the role of the axon initial segment (AIS) in the propagation of action potentials?
Signup and view all the answers
What determines the speed of action potential propagation?
Signup and view all the answers
What is the purpose of the refractory period after an action potential?
Signup and view all the answers
What triggers the rising phase of an action potential?
Signup and view all the answers
What is the function of voltage-gated sodium (Na+) channels during an action potential?
Signup and view all the answers
What is the function of voltage-gated potassium (K+) channels during an action potential?
Signup and view all the answers
What is the purpose of the undershoot/after-hyperpolarization (AHP) phase of an action potential?
Signup and view all the answers
What is the role of the axon hillock in the initiation of an action potential?
Signup and view all the answers
Which ion channels are responsible for depolarizing the postsynaptic membrane potential (Vm)?
Signup and view all the answers
Which type of potential occurs when there is a brief change in the postsynaptic membrane potential (Vm)?
Signup and view all the answers
Which ion channels are responsible for hyperpolarizing the postsynaptic membrane potential (Vm)?
Signup and view all the answers
Where does signal integration occur in a neuron?
Signup and view all the answers
Which type of signal transmission occurs when neurotransmitters (NTs) are released into the synapse?
Signup and view all the answers
What is the process called when neurotransmitters (NTs) are cleared from the synapse?
Signup and view all the answers
Which type of receptors open in response to ligand binding and cause very fast changes in membrane potential (Vm)?
Signup and view all the answers
What is the function of myelin in the conduction of action potentials?
Signup and view all the answers
What are the gaps between sections of myelin where the axon is exposed called?
Signup and view all the answers
What is the process called when an action potential 'jumps' from node of Ranvier to node of Ranvier?
Signup and view all the answers
What are the two types of cells that create myelin in the nervous system, and where are they located?
Signup and view all the answers
What are the two types of signal transmission that occur in the synapse?
Signup and view all the answers
What are the gaps between sections of myelin where the axon is exposed called?
Signup and view all the answers
What triggers the opening of voltage-gated calcium channels (VGCCs) in the presynaptic terminal?
Signup and view all the answers
What is the function of synaptic vesicles in the presynaptic terminal?
Signup and view all the answers
What is the process called when neurotransmitters (NTs) are cleared from the synapse?
Signup and view all the answers
What are the three ways in which signal integration can occur in a neuron?
Signup and view all the answers
What is the purpose of spatial summation in signal integration?
Signup and view all the answers
What is the purpose of temporal summation in signal integration?
Signup and view all the answers
What is the process called when an inhibitory postsynaptic potential (IPSP) spatially coincides with an excitatory postsynaptic potential (EPSP) and partially or totally cancels it out?
Signup and view all the answers
What is the function of the axon hillock in the initiation of an action potential?
Signup and view all the answers
What is the role of the axon initial segment (AIS) in the propagation of action potentials?
Signup and view all the answers
What determines the speed of action potential propagation?
Signup and view all the answers
What triggers the opening of voltage-gated sodium (Na+) channels?
Signup and view all the answers
What triggers the opening of voltage-gated potassium (K+) channels during an action potential?
Signup and view all the answers
Which type of potential occurs when there is a brief change in the postsynaptic membrane potential (Vm)?
Signup and view all the answers
Which type of stimuli can change the membrane potential (Vm) of a neuron?
Signup and view all the answers
Which ion is highly concentrated outside of the cell?
Signup and view all the answers
Where does signal integration occur in a neuron?
Signup and view all the answers
What is the resting membrane potential of a neuron?
Signup and view all the answers
What are the three types of ion channels that allow ions to cross the cell membrane?
Signup and view all the answers
Explain the difference between depolarization and hyperpolarization.
Signup and view all the answers
What is the role of the Na+/K+ pump in maintaining consistent ionic concentrations?
Signup and view all the answers
What are the five distinct stages of an action potential?
Signup and view all the answers
What triggers the opening of voltage-gated Na+ channels during an action potential?
Signup and view all the answers
Explain the concept of frequency-coding in action potentials.
Signup and view all the answers
What determines the speed of action potential propagation?
Signup and view all the answers
What is the purpose of the refractory period after an action potential?
Signup and view all the answers
What is the role of nodes of Ranvier in the conduction of action potentials?
Signup and view all the answers
Where does signal integration occur in a neuron?
Signup and view all the answers
Match the following ions with their location of high concentration in relation to a neuron:
Signup and view all the answers
Match the following terms with their appropriate definitions:
Signup and view all the answers
Match the following processes with their descriptions:
Signup and view all the answers
Match the following potentials with their values:
Signup and view all the answers
Match the terms with their definitions:
Signup and view all the answers
Match the terms with their definitions:
Signup and view all the answers
Match the terms with their definitions:
Signup and view all the answers
Match the terms with their definitions:
Signup and view all the answers
Match the following ions with their high concentration locations:
Signup and view all the answers
Match the following terms with their definitions:
Signup and view all the answers
Match the following terms with their definitions in the context of neuronal action potential:
Signup and view all the answers
Match the following phases of an action potential with their descriptions:
Signup and view all the answers
Match the following ion channels with their functions during an action potential:
Signup and view all the answers
Match the following terms with their definitions in the context of action potential propagation:
Signup and view all the answers
Match the following properties of the action potential with their descriptions:
Signup and view all the answers
Match the following terms related to ion movement with their definitions:
Signup and view all the answers
Match the following terms with their definitions in the context of changes in Vm:
Signup and view all the answers
Match the following types of ion channels with their functions:
Signup and view all the answers
Match the following terms with their definitions in the context of the neuron's response to stimuli:
Signup and view all the answers
Match the following terms with their definitions in the context of the action potential:
Signup and view all the answers
Match the following terms with their correct definitions:
Signup and view all the answers
Match the following terms with their correct definitions:
Signup and view all the answers
Match the following terms with their correct definitions:
Signup and view all the answers
Match the following terms with their correct definitions:
Signup and view all the answers
Match the following terms with their correct definitions:
Signup and view all the answers
Match the following terms with their correct definitions:
Signup and view all the answers
Match the following terms with their correct definitions:
Signup and view all the answers
Match the following terms with their correct definitions:
Signup and view all the answers
Match the following terms with their correct definitions:
Signup and view all the answers
Match the following terms with their correct definitions:
Signup and view all the answers