Asked by Parvee Srivastava | 14th Sep, 2012, 08:29: PM

Expert Answer:

Yes autonomic nervous system is the same as involuntary nervous system.

The nervous system can be divided into two parts: the central nervous system and the peripheral nervous system. The peripheral nervous system (PNS) is the system of nerves outside of the central nervous system (CNS i.e. brain and spinal cord). It is divided into:

  • Sensory Nervous System - sends information to the CNS from internal organs or from external stimuli.

  • Motor Nervous System - carries information from the CNS to organs, muscles, and glands. This system is further divided into somatic and autonomic nervous system.
    • Somatic Nervous System - controls skeletal muscle as well as external sensory organs.

    • Autonomic Nervous System - controls involuntary muscles, such as smooth and cardiac muscle. The autonomic nervous system can further be divided into the parasympathetic and sympathetic divisions.

      • Sympathetic - controls activities that increase energy expenditures.
      • Parasympathetic - controls activities that conserve energy expenditures.

    Answered by  | 17th Sep, 2012, 08:13: AM

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