PSYC 211 Lecture Notes - Lecture 3: Botulinum Toxin, Analgesic, Autonomic Nervous System
8 May 2012
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Psyc 211 lecture 3 january 16th 2011. Synapse junction between the terminal buttons of the sending neuron and a portion of the dendritic neuron of the receiving neuron. Synapse can be on membrane of soma or on dendrite. Synaptic transmission transmission of messages from one neuron to another through the synapse through neurotransmitters, which diffuse across the synaptic cleft. They attatch to the presynaptic membrane and relase neurotransmitter into the synaptic cleft. Synaptic cleft is the space between the pre and postsynaptic membranes. Presynaptic membrane is the membrane of the terminal button (the sending cell). This is where the neurotransmitter is released. (calcium channels here) Postsynaptic membrane: is the membrane of the receiving cell. Neurotransmitters facilitate the opening of channels for ions on the membrane by binding onto the presynaptic membrane. Movement of ions affect the potential of the postsynaptic membrane. Determined by the type of ion that the receptor opens. Four types of ion channels na, k, cl, ca2+.
