CAS PS 222 Study Guide - Comprehensive Final Exam Guide - Retina, Neuron, Visual Cortex
21 Nov 2018
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Document Summary
Chemical communication between neurons: a complex chemical molecule, the nt moves from the vesicles in the axon bulb of one neuron, across the synapse (=space between neurons) to the receptor site on a dendrite of another neuron. Lock and key phenomenon = only certain receptors can. Synaptic transmission of neuronal impulses pick up the right nt. Nts are: released by the presynaptic neuron from vesicles, received by the postsynaptic neuron on receptor sites, matched like a lock and key for each receptor site, used as trigger for voltage change in the postsynaptic neuron. Nts make communication possible between neurons possible by: crossing the synapse, lock and key model. Nts will affect the postsynaptic membrane only if the molecules shape fits the certain synaptic receptor sites (synaptic transmission virtual lab c2 #6 ) Reuptake or deactivation occurs: some transmitters are inactivated shortly after being discharged by cleanup enzymes. Nts: powerful chemicals that regulate numerous physical and emotional processes.
