Distribution of muscarinic receptors in the brain
There are two main types of cholinergic receptors in the brain, muscarinic and nicotinic receptors. Muscarinic receptors are further classified as M1–M5, and nicotinic as NN and NM. The muscarinic receptors are widely distributed throughout the central nervous system. Briefly, these receptors can be found in the cerebral cortex, corpus striatum, limbic system, thalamus, hypothalamus, midbrain and brainstem.
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References
Molecular biology, pharmacology and brain distribution of sub-types of the muscarinic receptor. The American College of Neuropsychopharmacology. www.acnp.org/g4/GN401000010/CH010.html Accessed on 21 February 2002.