fibrous astrocyte
Quick Summary
Fibrous astrocytes are a type of astrocyte, which are star-shaped cells found in the nervous system that support neurons. These cells are characterized by numerous fibrils in their cytoplasm and are prevalent in the white matter of the central nervous system, particularly among myelinated nerve fibers.123
Fibrous astrocytes have processes that extend radially, forming end feet that contact vascular capillaries. They are distinct from protoplasmic astrocytes, which are found in the gray matter and have fewer cytoplasmic fibrils. Astrocytes can divide after nervous system injury and are believed to play a role in modulating synaptic transmission by taking up neurotransmitters like glutamate and GABA.3
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.
