CSB332H1 Study Guide - Midterm Guide: Ligand-Gated Ion Channel, Tetrodotoxin, Electromotive Force
26 Feb 2014
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Document Summary
Synapse is made up of: presynaptic element. Contains synaptic vesicles, which house neurotransmitter that is released after vesicle fusion with the plasma membrane. Gap between presynaptic and postsynaptic elements into which neurotransmitter molecules are released: postsynaptic element. Canonical synapse: presynaptic terminal is in close proximity to the postsynaptic element (1:1) Result in an excitatory response in the postsynaptic element. Found on dendritic spines (axodendritic synapse) and dendritic shafts (?) Result in an inhibitory response in the postsynaptic element. Found on dendritic shafts (axodendritic synapse) and cell bodies (axosomatic synapse) Non-canonical synapse: presynaptic terminal is not in close proximity to the postsynaptic element, release other neurotransmitters in massive to reach many postsynaptic targets. Magnetic resonance imaging (mri: produces an anatomical image of the brain, application of strong magnetic field. Aligns the hydrogen protons in the brain in a parallel/anti-parallel direction. Produces a net longitudinal (north/south) magnetic field vector: application of radiofrequency (rf) pulse. Disturbs the precession of protons and their alignment.
