18 Questions
What is the main function of the axon in a neuron?
Carrying impulses away from the cell body
Which cells are responsible for CNS myelination?
Oligodendrocytes
What is the role of synapses in neural communication?
Transmitting information from one neuron to another
During the refractory period of a neuron, what is happening?
The neuron is at rest and cannot generate another action potential
Which type of glial cells are responsible for injury repair in the nervous system?
Microglial cells
What happens during a neural impulse with regard to ions?
Positively and negatively charged ions flow back and forth across the cell membrane
What is the main function of dendrites in a neuron?
Receive information and send it towards the cell body/soma
What is the purpose of the myelin sheath in a neuron?
Speed up transmission of impulses
What is the function of the nucleus in a neuron?
Contains genetic material instructions
Where does the information move from in a neuron to the soma?
Axon to dendrites
Which part of a neuron contains chemicals common to most cells?
Cell body/soma
In a neuron, where does the vast majority of communication occur?
Between synapses
What is the function of the synapse in neural communication?
To communicate signals between neurons
During the absolute refractory period, what occurs?
The neuron is unable to fire another action potential
What triggers the release of neurotransmitters at the axon's terminal button?
Arrival of an action potential
What effect can be produced at the receiving synapse as a result of neural communication?
Increase in the chances of firing an action potential
What does the relative refractory period indicate about the firing of a neuron?
The firing of the neuron requires more intense stimulation
What is the function of the postsynaptic neuron in neural communication at synapses?
To receive signals from the presynaptic neuron
Learn about neurons, axon terminals, synapses, and glial cells in the nervous system. Understand the functions of these components and how they work together to transmit information within the brain.
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