Autonomic Nervous System

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Autonomic Nervous System
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Divisions of the Autonomic Nervous System

• Parasympathetic Division
• Most active in non-stressful situations
• Directs housekeeping activities (resting
  digesting)
• Role of the Sympathetic Division
• Active in stressful situations
• Exitatory fight or flight response

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Effects of Drugs

• Atropine
• Neostigmine
• Tricyclic antidepressants

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Interactions of the Autonomic Divisions

• Interactions of the Autonomic Divisions
• Antagonistic Interactions
• Sympathetic and Parasympathetic Tone
• Cooperative Effects

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Unique Roles of the Sympathetic Division

• Thermoregulatory responses to heat
• Release of Renin from the kidneys
• Metabolic effects

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Unique Roles of the Sympathetic Division

• Thermoregulatory responses to heat
• Release of Renin from the kidneys
• Metabolic effects
• Localized versus diffuse effects

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Homeostatic Imbalances of ANS

• Hypertension
• Raynauds disease
• Mass reflex reaction