PSYC 3 Lecture Notes - Lecture 11: Ligand-Gated Ion Channel, Choroid Plexus, Dura Mater

• School: Irvine Valley College
• Department: Psychology
• Course: PSYC 3
• Professor: mis

Document Summary

How do we keep psp"s caused by messengers brief. Enzyme that destroys the neurotransmitter at the synapse in synaptic cleft. Ex: acetylcholinesterase (ache)- the enzyme that breaks down acetylcholine (nt) in the synaptic cleft. Efficient 1000 ach molecule per second per molecule of ache. Recycled-pre-synaptic neuron takes up the precursor and reuses it for. Glia take it up for excretion via bloodstream. Rapid removal of the neurotransmitter from the synaptic cleft by the terminal button. Special transporters that actively take the neurotransmitter back into the presynaptic cell"s terminal button. Enzymes inside the cell can then deactivate the neurotransmitter. Prolongs signals by creating second messenger and open ion channel from inside. Collection of cell bodies in the cns. Collection of cell bodies in the pns. Protective sheath around brain and spinal cord. Space btwn the pia mater and arachnoid membrane that is filled with. Csf is clear fluid similar to blood plasma that fills the ventricular system and subarachnoid space.