BT_GS 1.49 Mechanisms of Anaesthesia

I am hoping to focus on inhalational agents this week—as long as I can get all the questions written in time.

BT_GS 1.49 Discuss proposed mechanisms of anaesthesia and the sites of action of anaesthetic agents including the physiology and pharmacology of neurotransmitters and their receptors (that is, GABA, excitatory amino acids, acetylcholine, noradrenaline, dopamine and serotonin)

TRUE/FALSE Nitrous oxide produces analgaesia through actions on opioidergic neurons in the periaqueductal gray matter

TRUE/FALSE Inhaled anaesthetic agents probably have their action through inhibition of axonal propagation
TRUE/FALSE There is a rough correlation between inhalational anaesthetic potency and ability to hyperpolarize neurons.
TRUE/FALSE Halogenated inhaled agents increase the affinity of the GABA receptor for GABA
TRUE/FALSE Inhaled anaesthetics most likely have their action by perturbing the biophysical properties of lipid bilayers

I know you have all been sleepless with anticipation, desperate to know the answer to last week’s photo quiz. The final picture is of a boiler to produce steam for use in the CSSD. There are more medical gases in the hospital than you might think!

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