Predominary Sympathetic or Parasympathetic Tone
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| Predominary Sympathetic or Parasympathetic Tone | ||
| Antatomical Site | Predominant Autonomic Tone | Effect of Ganglionic Blockade |
| Arterioles | Sympathetic-adrenergic | vasodilatation; increased peripheral blood flow; hypotension |
| Veins | Sympathetic-adrenergic | dilatation; blood pooling; decreased venous return; decreased cardiac output |
| Heart | Parasympathetic-cholinergic | tachycardia |
| Ciliary Muscle | Parasympathetic-cholinergic | cycloplegia (loss of accommodation) |
| Gastrointestinal Tract | Parasympathetic-cholinergic | reduced tone and motility; constipation; decreased secretions |
| Salivary Glands | Parasympathetic-cholinergic | Xerostomia (dry mouth) |
| Sweat Glands | Sympathetic-cholinergic | Anhidrosis (lack of sweating) |
Category: Pharmacology Notes
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