BSCI 353 Lecture Notes - Lecture 2: Immunolabeling, Insitu, Motility
5 Sep 2016
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Dendrite cell body axon axon terminal. Information must be delivered by synaptic connections made to cell body. Multipolar neurons have a lot of dendrites there are also branches of axons. Axon and dendrite refer to structures; does not predict function. In general, dendrites respond to nt and initiate electrical signals. In general, axon terminals release nt"s and stimulate neighbor cells. But if dendrite, axon or cell body has evolved necessary molecular machinery, it can perform either function. Presence of particular molecular machinery predicts function, not cytoskeletal structure. Cajal"s principle of dynamic polarization does not always hold. Cell body is site of protein synthesis nucleus, er, golgi and vast majority of ribosomes are in cell body you"ll find mitochondria everywhere. Synapses are sites of information transfer between neurons. Axons can be covered in myelin or not. The beginning of axon is where ap is usually initiated. Structure of neurons, like other cells, can be examined by immunostaining and gfp tagging methods.
