THE NERVOUS SYSTEM BY Kayla Lowery. MAJOR FUNCTIONS! SOME OF THE MAIN FUNCTIONS OF THE CENTRAL NERVOUS SYSTEM AND THE PERIPHERAL SYSTEM ARE:  To control.

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Presentation transcript:

THE NERVOUS SYSTEM BY Kayla Lowery

MAJOR FUNCTIONS! SOME OF THE MAIN FUNCTIONS OF THE CENTRAL NERVOUS SYSTEM AND THE PERIPHERAL SYSTEM ARE:  To control movement of the body based on sensory information  To send appropriate impulses to the muscles and glands  The peripheral system connect the central nervous system to the limbs and organs.

MAJOR PARTS!  There are three parts of the nervous system: the central nervous system (CNS), the peripheral nervous system (PNS), and the autonomic nervous system (ANS).  CNS includes the brain and spinal cord.  PNS is made up of all body nerves that are outside of the CNS.  ANS controls involuntary actions of the bodily organs.

DIAGRAM

PATH OF THE NERVE IMPULSE  It begins with a stimulus. Noted by a sensory receptor, so it alerts a sensory neuron. The nerve impulse reaches the central nervous system (CNS) where it is directed to the motor neuron. From there it goes to the muscle and finally there is a response.

HOW DOES IT WORK WITH OTHERS?  The nervous must interact with all the body systems in a human. It sends signals to the brain to help other systems function.  In the skeletal system bones provide calcium that is essential for proper function of the nervous system  The brain (part of the nervous system) monitors respiratory volume and blood gas levels  The autonomic nervous system controls the tone of the digestive tract.

FOUR INTERESTING FACTS!  There are more nerve cells in the human body than there are stars in the sky  A newborn baby’s brain grows almost three times during the course of the first year  An average adult male brain weighs about 1,375 pounds  The nervous system can transmit impulses as fast as 100mph

THE END