BMS1052 Lecture Notes - Lecture 2: Cytosol, Lipid Bilayer, Microfilament
18 Aug 2018
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Document Summary
Describe the function of axons and dendrites. Describe the role of : identify the 4 different classes of glial cells identify ways of characterising and naming neurones. Myelinating glia ( schwann cells and oligodendrocytes) The 2 classes of cells in the nervous system : neurons (10%) Communicate with each other via electrical and chemical means. Physical structures : reflect specialisations for either computation (processing information) or transmitting info over long distances or to other neurons: glial cells (90%) likened to glue or structural support. Has critical role in electrical insulation (myelin sheathes) Note: cells have a special membrane comprising a lipid bilayer this layer separates the cytosol from the extracellular space. Extracellular space is high in : na, cl -> like the ocean. Intracellular space (cytosol) is high in k and low in ca2+ specialised cells within the nervous system have a nucleus : site of all rna transcription.
