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ANS Receptors
B. Busey ANS Receptors
Receptor Type | Location | Action |
---|---|---|
M1- Cholinergic | CNS | IP3DAG Increase Calcium |
M2- Cholinergic | Heart | Increase cAMP, Potassium |
M3-Cholinergic | Smooth Muscle, Glands, Circular Iris | IP3DAG, Allow Drainage from Schlemm, Constrict Pupil, Accomodation, Increase GI motility/Secretions |
Alpha1- Adrenergic | Postsynaptic- smooth muscle | IP3DAG, Vasoconstrict, Sphincter Constrict, Relax Detrusor, Dilate Pupil |
Alpha2- Adrenergic | PreSynaptic- Smooth Muscle, Fat, Platelets, Nerve Terminal | Decrease cAMP |
Beta1- Adrenergic | Heart | Increase cAMP, Increase HR and Contractions |
Beta2- Adrenergic | Smooth Muscle/Cardiac Vessels, GI, Urinary | Increase cAMP, Eye Dilator, Relax Detrusor, Relax GI |
Beta3- Adrenergic | Fat | Increase cAMP |
D1 | Renal | Increase cAMP |
D2-4 | CNS | Decrease cAMP |