PSYC10300 Lecture Notes - Acetylcholine, Cerebellum, Calcium Channel
5 Mar 2013
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Epigenome- can turn on genes that will be expressed and turn off genes that won"t. The basic unit of the nervous system. Specialized to receive, process, and/or send information to other cells. Axon: elongated fiber that goes from the cell body to the terminal buttons. Myelin sheath: insulates axon and helps transmit information faster. Terminal buttons: sends signal to other neurons. Synapse: small gap at the end of a neuron that allows information to be passed from one neuron to the next. Neurotransmitters are synthesized from precursors then stored in vesicles. Action potential cause vesicles into the synapse. Released neurotransmitters bind to other neuron"s receptors. Brain circuit: a set of neurons that affect one another. Send information from spinal cord to muscles and glands. All or none law: if a neuron is sufficiently stimulated (threshold is met) it fires. Major neurotransmitters: serotonin, glutamate, acetylcholine, dopamine, gaba.
