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ANS (para/sympathetic) chart

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Target Organ/system
Sympathetic effects
Parasympathetic effects
Eyes ( iris)   Stimulates dilator muscles, dilates eye pupils   Stimulates constrictor muscles: constricts eye pupils  
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Sweat Glands   Stimulates copious sweating   No effect  
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Arrector pilorum muscles   Stimulates to contract( erect hairs, goosebumps )   No effect  
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Heart Muscle   Increases heart rate and force of heartbeat   Decreases heart rate; slows down and steadies heart  
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Digestive tract organs   Decreases activity of glands and muscles of the digestive system and constricts sphincters   Increased motility ( peristalsis) and amount of secretion by digestive organs; relaxes sphincters to allow movement of food along tract  
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Blood vessles   Constricts most vessels and increases blood pressure ; constricts vessels of abdominal viscera and skin   Little or no effect  
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Mental Activity   Increases alertness   No effect  
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Male Penis   Ejaculation (S-Shoot)   Erection (P-Point)  
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Glands (nasal,lacrimal,salivary,gastric,pancreas)   Inhibits secretory activity; causes vasoconstriction of blood vessels supplying the glands   Stimulates Secretory activity  
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Created by: osabdelr
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