Selected Autonomic Nervous System
Responses
|
|
Sympathetic |
Parasympathetic |
|
Cardiac |
Increased SA rate (Beta1) Increased Force of Contraction Increased AV conduction (Beta2) |
Slowed rate Decreased FOC Decreased AV conduction |
|
Arteries |
Dilated (Beta2) |
Dilated |
|
Lungs |
Dilated Bronchioles (Beta2) Mildly constricted blood vessels |
Constricted Bronchioles ?? Dilated blood vessels |
|
Eyes |
Pupil Dilation |
Pupil Constriction |
|
GI track |
Decreased secretios Decreased motility |
Increased secretions Increased motility |
Adrenergic Receptor Activation
|
Alpha |
Beta 1 |
Beta 2 |
|
Vasoconstriction |
Cardioacceleration |
Vasodilation |
|
Intestinal relaxation |
Increase myocardial |
Intestinal relaxation |
|
Pupil dilation |
strength |
Uterine relaxation |
|
Bladder sphincter contraction |
|
Bladder wall relaxation |
|
|
|
Bronchodilation |
© J.P.Frizzell Ph.D.
RN 1997
Return to Course Page