Effector Organ |
Sympathetic Effects (receptor) |
Parasympathetic Effects (receptor) |
|
Eye (iris) |
Contraction of dilator pupillae muscles – mydriasis (α1) |
Contraction of sphincter pupillae muscles – miosis (M) |
|
Eye (ciliary muscle) |
Relaxation (β2) for distant vision |
Contraction (M) for accommodation of lens (near vision) and increase aqueous humor outflow into canal of Schlemm |
|
Eye (ciliary body epithelium) |
Increased aqueous humor production (β1) |
— |
|
Heart |
Increased heart rate, increased force of contraction and increased conduction rate (β1) |
Decreased heart and conduction rate (M), decreased atrial contractility (M) |
|
Arterioles(skin,abdominal viscera, kidney) |
Strong vasoconstriction (α1) |
— |
|
Arterioles(skeletal muscle) |
Weak vasoconstriction (α1) |
— |
|
Vessels(heart) |
Vasoconstriction (α1), Vasodilation (β2) |
— |
|
Lungs |
Dilates Bronchioles (β2) |
Constricts bronchioles (M) |
|
Uterus, pregnant |
Constriction (α1), relaxation (β2) |
Contraction (M) |
|
Gastrointestinal tract wall |
Decreased tone (α1,α2,β2) |
Increased tone (M) |
|
Gastrointestinal tract sphincter |
Contraction (α1) |
Relaxation (M) |
|
Gatrointestinal tract secretion |
— |
Increased (M) |
|
Kidney |
Increased renin release (β1) |
— |
|
Bladder wall (detrusor muscle) |
Relaxation (β2) |
Contraction (M) |
|
Internal urinary sphincter |
Contraction (α1) |
Relaxation (M) |
|
Pancreas |
Decreased insulin secretion (α2), decreased exocrine secretion (α) |
Increased insulin secretion (M), increased exocrine secretion (M) |
|
Fat cells |
Lipolysis (β3) |
— |
|
Liver |
Glycogenolysis (α1,β2), Gluconeogenesis (α1,β2) |
— |
|
Piloerector muscles of skin |
Contraction (α1) |
— |
|
Salivary gland |
Constriction of vessels & small production of a viscous saliva. (α1) |
Dilation of vessels & large production of thin saliva (M) |
|
Sweat gland |
Generalized sweating (M) Localized sweating(stress) – palms & soles (α1) |
— |
|
Adrenal medullae |
Increased secretion of EPI or NE (N) |
— |
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