PSYC359 Psychopharmacology exam questions with answers.

PSYC359 Psychopharmacology |\ |\




exam questions with answers |\ |\ |\




if the membrane potential of a neuron changes from -65mV to -
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75mV... - CORRECT ANSWERS ✔✔the membrane is now more
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polarised


when voltage-gated Na+ channels are opened, Na+ ions rush into
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the neuron. The force driving this movement into the cell is: -
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CORRECT ANSWERS ✔✔primarily due to the diffusion gradient
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across the cell membrane
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At rest, - CORRECT ANSWERS ✔✔the extracellular region is more
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positive than the intracellular region of a neuron
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communication within the central nervous system - CORRECT |\ |\ |\ |\ |\ |\ |\ |\



ANSWERS ✔✔is dependent on both electrical and chemical
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processes


'Always Open' ion channels are also called - CORRECT ANSWERS
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✔✔non-gated ion channels |\ |\

,what is the more important for communication between neurons? -
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CORRECT ANSWERS ✔✔chemical processes |\ |\ |\




when a Na+ channel is opened, Na+ ions rush into the neuron.
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This results in... - CORRECT ANSWERS ✔✔either no effect on, or
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inhibition or excitation of the subsequent neuron, depending on |\ |\ |\ |\ |\ |\ |\ |\ |\



other factors |\




Opening a ligand-gated sodium (Na+) channel will - CORRECT
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ANSWERS ✔✔depolarise the cell membrane |\ |\ |\ |\




functions of the membrane - CORRECT ANSWERS ✔✔it allows the |\ |\ |\ |\ |\ |\ |\ |\ |\



passage of specific ions into and out of the neuron; it maintains the
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resting membrane potential; it allows controlled changes to the
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membrane potential |\




ions, or small charged molecules - CORRECT ANSWERS ✔✔they
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are similar to other electrically charged objet in so far as similarly
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charged ions repel, whereas those with opposite charges attract each
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other
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an inverse agonist - CORRECT ANSWERS ✔✔decreases activation
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of a receptor
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, opening a ligand-gated sodium )Na+) channel will - CORRECT
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ANSWERS ✔✔depolarise the cell membrane |\ |\ |\ |\




partial agonists - CORRECT ANSWERS ✔✔can either increase or
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decrease ion channel activity, depending on other factors
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categorising receptors into serotonergic, dopaminergic etc, is an
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example of - CORRECT ANSWERS ✔✔pharmacological subtyping
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allosteric modulation (AM) and/or co-transmission (CT) -
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CORRECT ANSWERS ✔✔for AM to affect ion channel opening, the
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ion channel receptor must also be activated
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categorising receptors into G-protein linked receptors and ligand-
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gated ion channel receptors, is an example of - CORRECT
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ANSWERS ✔✔receptor superfamilies |\ |\




Type of drugs used to treat anxiety disorders? - CORRECT
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ANSWERS ✔✔Both SSRIs and GABA agonists |\ |\ |\ |\ |\




in the 1960's, the first-line treatment for anxiety disorder subtype
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was - CORRECT ANSWERS ✔✔anxiolytics
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