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Nervous System

The nervous system consists of three main parts: the brain, spinal cord, and nerves. The brain serves as the control center of the body, weighing about 3 pounds and resembling a grapefruit in size. Its main components include the cerebellum (coordination of movement), cerebrum (thinking and memory), and brain stem (involuntary functions). The spinal cord, protected by vertebrae, serves as the pathway for messages between the brain and body. Nerves, comprised of neurons, transmit signals throughout the body, playing vital roles in sensory and motor functions.

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Nervous System

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  1. Nervous System Brain Spinal cord Nerves DEMOSS CHIROPRACTIC20321 Birch Street, Suite 100Newport Beach, CA 92660

  2. The Nervous system • Is made of three main parts • Brain • Spinal Cord • Nerves

  3. 1. The Brain • Control Center for the body • Weights about 3 pounds • Is the size a grapefruit • Has 3 main parts • Cerebellum • Cerebrum • Brain stem

  4. Brain: the cerebellum Cerebellum is located at the back side of head, near the back of the neck area. • Controls voluntary movement • Coordinates muscle action for • Running • Walking • Painting • Balance www.futureparadigm.org

  5. Brain: the cerebrum (The largest part of the brain, at the top) • Controls our ability • To think • To remember • To feel • To dream • Talk • Sense www.sinauer.com

  6. Brain: the brain stem • Brain stem (bottom) • Controls involuntary movement • Basic life support like • Heart beating • Lungs breathing • Eyes blink

  7. The Spinal Cord • Our spinal cord goes from the brain down the back through the vertebral column . • The spinal cord forms the main path for messages entering amd leaving our brain. www.daviddarling.info

  8. Spinal Cord (cont) The spinal cord is encased in vertebra for protection. http://static.howstuffworks.com/gif/nerve-10.gif

  9. The Nerves • The main part of the nervous system. • Nerves carry messages throughout your body: to, from, and within the brain. • Nerves are long and thin like threads. • They are bundles of wrapped nerve cell fibers, or neurons. www.AMBIENCR.com

  10. Neurons make up the nerves. www.sjhsyr.org

  11. Nerves (cont.): neurons • There are several types of neurons, depending on function. • Nerves • Sensory nerves come from the senses • Motor nerves send messages to muscles and other parts of the body from the brain in response to a sensory nerve message. www.epilepsyfoundation.org

  12. Diseases of the Nervous System • “Parkinson's disease is a slowly progressive disorder that affects movement, muscle control, and balance. Part of the disease process develops as cells are destroyed in certain parts of the brain stem, particularly the crescent-shaped cell mass known as the substantia nigra. “ • 1998-2009 HowStuffWorks, Inc. • Alzheimer disease (AD) is where the cerebral cortex and some other forebrain regions shrink. It affects more women than men. • Broca aphasia is defined by Websters Dictionary as a "loss or impairment of the power to use or comprehend words usually resulting from brain damage."

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