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Divisions of the Autonomic Nervous System

Division

Some Effects

Sympathetic

Increases the following:

  • Heart rate and contractility

  • Bronchodilation

  • Hepatic glycogenolysis and glucose release

  • Basal metabolic rate (BMR)

  • Muscular strength

Causes palms to sweat

Decreases functions not necessary for immediate survival (eg, digestion)

Controls ejaculation

Parasympathetic

Stimulates gastrointestinal secretions and motility (including bowel evacuation)

Slows heart rate

Reduces blood pressure

Controls erection