BIOL-108 Lecture Notes - Lecture 2: Microglia, Neurotransmission, Oligodendrocyte
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The brain is the most complicated organ (cid:862)(cid:373)ost (cid:272)o(cid:373)ple(cid:454) thi(cid:374)g i(cid:374) the u(cid:374)i(cid:448)e(cid:396)se(cid:863) Mistaken beliefs replaced by more accurate knowledge. Gelatinous (cid:862) the (cid:272)hief fu(cid:374)(cid:272)tio(cid:374) of the (cid:271)od(cid:455) is to (cid:272)a(cid:396)(cid:396)(cid:455) the (cid:271)(cid:396)ai(cid:374) a(cid:396)ou(cid:374)d(cid:863)- edison. Nerve cells act as communication portals: nerve cell specialized for communication, 100 billion at birth, make tens of thousands connections with other neurons, 160 trillion connections in human brain, strange looking cells. If the cell body gets damaged the cell will die. Ithas the nucleos where the protiens are made and packaged. Dendrites the receiving end of cells, they have receptor sites. Axon hillock: where the action potential propogates from. Axon: travels all the way down the tail, an action potential can be carried to another neuron. Glial cells: more than just glue: oligodendrocytes, myelinate axons: myelin: fatty layer that insulates axons, produces myelin for the axons, microglia, astrocytes.
