(2) Autonomic nervous system. The autonomic nervous system is
involuntary. It innervates smooth muscles, cardiac muscles, and gland cells. The
autonomic nervous system aids the body in the fight or flight response.
Figure 6-1. Divisions of the peripheral nervous system.
Figure 6-2. Divisions of the peripheral nervous system.
Section II. THE AUTONOMIC NERVOUS SYSTEM
6-3. INTRODUCTION
As was previously mentioned, the autonomic nervous system is one part of the
peripheral nervous system. The autonomic nervous system is involuntary. It innervates
smooth muscles, cardiac muscles, and gland cells. It aids the body in the fight or flight
response. The autonomic nervous system helps to control urinary output, sweating,
body temperature, arterial pressure, and gastrointestinal motility and secretion.
6-4. CONTROL OF THE AUTONOMIC NERVOUS SYSTEM
Centers located in the brain stem, hypothalamus, and spinal cord activate the
autonomic nervous system.
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6-4