NEUR30002 Lecture Notes - Lecture 2: Neuroglia, Ependyma, Schwann Cell

• School: University of Melbourne
• Department: Neuroscience
• Course: NEUR30002
• Professor: Andrew

Document Summary

Satellite cells: produce myelin sheath which wraps around neuronal axons to protect and speed up transmission, schwann cells in the pns, oligodendrocytes in the sns. Modulation of blood flow: which can be detected by fmri oxygenated and deoxygenated blood. Take up excessive k+ and neurotransmitters in the synapse. Astrocyte territory is a small region of the brain that it covers. Astrocytes project small processes from cell body, to nearby blood vessels, attaching the blood vessel > forming blood brain barrier. Siphon processes also have an important role in modulating blood flow. Increased astrocyte activity leads to an increased glucose requirement: this then causes hyperaemia: blood increases to active areas of the brain and decreases in inactive areas of brain fmri can be used to record this change of flow. They separate different synapses, preventing nt from one synapse affecting the post-synaptic cell of another synapse. They maintain the fidelity of information transfer across a specific synapse.