Answer:
Mu Receptors are also known as Morphine Receptors. Mu Receptors are located in the Brainstem and Medial Thalamus, they are responsible for supraspinal analgesia, respiratory depression, euphoria, sedation, decreased gastrointestinal motillity and physical dependance.
The Subtypes are:
Mu1 and Mu2
Mu receptors (as well as Delta and Kappa and even Nociceptin) all these receptors are linked to opiates binding to them. They are members of G-Protien Coupled Receptors.
If your new to this sort of thing then i recommend you get onto Wikipedia and start with Mu receptors and learn the pharmacology of Opiates.
With MU in particular though the G protein binds to the third intracellular loop of the opioid receptors in the CNS. You should also check out the other spots that opiate receptors are located in the body (i.e. Spinal cord)
I hope that i helped you, like i said, i edit alot of articles on Wikipedia.org too so i reccommend you check up on that. Happy Hunting.
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