- published: 24 Sep 2013
- views: 40752
Astrocytes (etymology: astron gk. star, cyte gk. cell), also known collectively as astroglia, are characteristic star-shaped glial cells in the brain and spinal cord. They are the most abundant cell of the human brain. They perform many functions, including biochemical support of endothelial cells that form the blood–brain barrier, provision of nutrients to the nervous tissue, maintenance of extracellular ion balance, and a role in the repair and scarring process of the brain and spinal cord following traumatic injuries.
Research since the mid-1990s has shown that astrocytes propagate intercellular Ca2+ waves over long distances in response to stimulation, and, similar to neurons, release transmitters (called gliotransmitters) in a Ca2+-dependent manner. Data suggest that astrocytes also signal to neurons through Ca2+-dependent release of glutamate. Such discoveries have made astrocytes an important area of research within the field of neuroscience.
Astrocytes
Astrocytes
Glial Cells - Neuroanatomy Basics - Anatomy Tutorial
Neurons and Astrocytes: The Plot Thickens
Physiology of Astrocytes
Astrocytes Help the Brain to Remember
Astrocytes listening in on neurons
Med School Parody of Dynamite by Taio Cruz: ASTROCYTES - NYMC Class of 2014 (HD)
Glial cells part 2 (astrocytes and microglia)
Astrocytic glutamate uptake