PSYC 2050U Lecture Notes - Lecture 3: Immune System, Botulinum Toxin, Limbic System
Document Summary
Otto lowei discovered glutamate, demonstrated neurons transmit using a chemical messenger, stimulated frog vagus nerve. Transferred bath from stimulated heart to second heart and both hearts decreased rate of beating. Synaptic cleft: gap between two cells where chemical signals are exchanged. Neurotransmitter (nt): chemical used to signal between neurons. Vesicle: small membrane (cid:1931)bubble(cid:1932) where nts are stored. Receptor: protein that transmits information from extracellular space to inside of cell. ***list of 4 from the text*** elaborate on 1 and 2 combining; 3 is omitted; 5 is omitted (note that autoreceptor should be defined here). Same basic explanation: nts are made, released via electric signal, can modulate activity of synapses and must be degraded or they continue to have an effect. Nts can be made in button or cell body and then transported along microtubles to button. Release influenced by ca2+ ions (extracellular fluid high [ ] ).
