In: Anatomy and Physiology
VISCERAL EFFECTOR |
EFFECT OF SYMPATHETIC STIMULATION |
EFFECT OF PARASYMPATHETIC STIMULATION |
Eye |
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Salivary glands |
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Bronchi (lungs) |
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Heart |
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Adrenal medulla |
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Stomach and intestines, anal sphincter |
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Sex organs |
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Bladder/internal urethral sphincter |
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Liver |
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Erector pili muscles |
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Arterioles to intestines, kidneys |
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Arterioles to heart, skeletal muscles, liver |
Effector organs | Parasympathetic system | Sympathetic system |
Eyes | Pupils constriction | Pupils dilatation |
Salivary glands | Increase secretion | Decrease secretion |
Bronchi (Lungs) | Bronchoconstriction | Bronchodilatation |
Heart | Decrese in Heart rate ,Decrease force of coduction,Decrease conductivity of heart | Increase in Heart rate,Increase in force of contraction ,Incresase conductivity through Heart |
Adrenal medulla | Inhibitory action |
Stimulate and release in adrenaline .Adrenaline stimulate the heart and increase heart rate,force of contraction and conductivity . Increase Blood pressure . Increase blood glucose |
Stomach | Stimulate contractility ,motility and secretion . | Inhibits motility ,contractility and secretion. |
Intestines | Increase intestinal motility and peristalis may result in diarrhea . | Decrease intestinal motility and peristalsis and result in constipation |
An*s sphincters | Relaxation of anal sphincter | Contraction of anal sphincter. |
Bladder | Increase contractility of blaader | Decrease contractility of blaader |
Internal Urethral sphincters | Relaxation of sphicter and passsage of urine | Contraction of sphincter and retention of urine |
Liver |
Glycogenesis Parasympathetic function is to take rest and store energy |
Glycogenolysis ,Gluconeogenesis. |
Erector pili muscles | No innervation |
Contracts of Muscles Piloerection ++ Goosebumps present |
Intestine arterioles | Vasodilation | Vasoconstriction as supply of splanchnic circulation is Decreased . |
Kidney arterioles | Vasodilation | Vasoconstriction |
Heart arterioles | Arteriolar dilation | Arteriolar constriction |
Skeletal muscles | Arteriolar constriction. | Arteiolar dilatation so increase blood supply to skeletal muscle help to fight against stress |
Liver | Vasodilation | Vasoconstriction |
Sex organs | Erection | Ejaculation |
Basic funda -- Whenever there is situation like fight or fright stress like situation ,heart require sympathy and cause increase in its activity other places decrease in their activity .Parasympathetic increase activity everwhere except Heart .
Parasympathetic increase secretions from all glands ,tears ,increase motility of stomach and intestine ,ureters and relaxation of sphincters .
Sympathetic stimulation increase the blood supply to skeletal muscle by Vasodilation and vasoconstriction of splanchnic circulation .