KNOW YOUR BODY, NERVOUS SYSTEM. The sensory organs of the body

The nervous system, composed of the sensory organs,

  • Brain,
  • Spinal Cord, And
  • Nerves, which transmits, integrates, and analyzes sensory information and carries impulses to effect the appropriate muscular or glandular responses.


The system conducts stimuli from sensory receptors to the brain and spinal cord and conducts impulses back to other parts of the body. The conduction of electrochemical stimuli from sensory receptors occurs via organized groups of specialized cells, consisting largely of neurons, various neural support cells, and tracts of nerve fibers, which serve as a network channeling neural impulses to the site at which a response occurs.


As with other higher vertebrates, the human nervous system has two main parts:

  • THE CENTRAL NERVOUS SYSTEM: (the brain and spinal cord) and the
  • PERIPHERAL NERVOUS SYSTEM: (the nerves that carry impulses to and from the central nervous system). In humans the brain is especially large and well developed.

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