12 Questions
What is spatial summation?
Combining signals that occur at different sites on the neuron's membrane
What characterizes the absolute refractory period?
A period during which it is impossible to elicit another action potential in the same neuron
What are neuropeptides?
Amino acid chains comprising 3 to 36 amino acids
What is exocytosis in the context of neurotransmission?
The process of releasing a neurotransmitter
What does temporal summation involve?
Integration of neural signals that occur at different times at the same synapse
What defines voltage-activated ion channels?
Ion channels that open and close in response to changes in the level of membrane potential
What is the process of adding or combining individual signals into one overall signal called?
Temporal summation
Which term refers to the integration of signals that occur at different sites on the neuron's membrane?
Spatial summation
What defines a brief period (typically 1 to 2 milliseconds) during which it is impossible to elicit another action potential in the same neuron?
Absolute refractory period
Which of the following refers to the conduction of an action potential along a myelinated axon from one node of Ranvier to the next?
Saltatory conduction
What are small spherical membranes that store neurotransmitter molecules and release them into the synaptic cleft called?
Synaptic vesicles
What does neuropeptides refer to?
Short amino acid chains comprising between 3 and 36 amino acids
Test your knowledge on the concepts of spatial summation, temporal summation, voltage-activated ion channels, and absolute refractory period in neural signal integration.
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