Satellite glia are a type of glial cell found in the peripheral nervous system. They surround neuron cell bodies within ganglia, providing support and maintaining the microenvironment.
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Satellite glia regulate the exchange of nutrients and waste products between neurons and their environment.
They play a crucial role in modulating neuronal excitability by controlling ion concentrations around neurons.
Satellite glia are involved in the response to nerve injury and can contribute to neuropathic pain.
They are similar in function to astrocytes found in the central nervous system but are located specifically around neurons in peripheral ganglia.
These cells help maintain homeostasis and protect neurons from harmful substances.
Review Questions
What primary function do satellite glia serve within the peripheral nervous system?
How do satellite glia contribute to neuronal health and activity?
In what way do satellite glia respond to nerve injury?
Related terms
Neuron: The basic functional unit of the nervous system responsible for transmitting electrical signals.
Astrocytes: Star-shaped glial cells in the central nervous system that perform similar functions to satellite glia but are located around neurons in the brain and spinal cord.
Ganglion: A structure containing a collection of neuron cell bodies typically found outside the central nervous system.