Video from Dr Matt & Dr Mike on YouTube
Classify muscarinic receptors (M₁–M₅) by location, G-protein coupling, effector mechanism and function.
Why this video
It explains the classification of cholinergic receptors, outlining muscarinic receptor locations, G-protein pathways, and target tissue responses.
Part of this line
Covers part of this objective. It leaves out: It devotes part of its time to nicotinic receptors and focuses mainly on M1 through M3, giving little attention to M4 and M5 subtypes.
Heads up
Be aware of the course convention that M3 directly stimulates gastric parietal cells while M1 acts through neural and paracrine facilitation.
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