1 / 18

Nervous System

Explore the central and peripheral components of the nervous system, how it receives information, responds to stimuli, and maintains internal conditions. Learn about the three parts of the brain and the different types of neurons. Discover the fascinating world of reflexes and their protective nature.

scorey
Download Presentation

Nervous System

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Nervous System http://www.brainpop.com/health/bodysystems/nervoussystem/

  2. The nervous system is made up of the brain, spinal cord and nerves. The central nervoussystem (CNS) consists of the brain and spinal cord. The peripheral nervoussystem (PNS) consists of all nerves outside of the central nervous system. Structures of the nervous system

  3. The nervous systemfunctions to receive information respond to stimuli to maintain stable internal conditions. Function of the nervous system

  4. Receiving Information • Your nervous system makes you aware of what is happening in the environment around you. • It lets you know that a ball is zooming toward you, your favorite song is on the radio and that the pizza in your hand is hot. • Your nervous system also checks conditions inside your body, like glucose levels in your blood.

  5. Responding to Stimuli • The nervous system responds to external stimuli like laughing at a funny movie. • The nervous system also responds to internal stimuli such as the body’s need for more oxygen by increasing the heart rate.

  6. Maintaining Stable Internal Conditions • The nervous system helps the body to maintain homeostasis by directing the body to respond appropriately to the information it receives. • For example, when you are hungry your nervous system directs you to eat.

  7. The Three Parts of the Brain are: • Cerebrum Interprets input from sense organs, controls voluntary movement, and is responsible for learning and memory. http://www.brainpop.com/health/bodysystems/brain/

  8. Cerebellum Coordinates your muscle movements and helps you keep your balance.

  9. Brainstem Controls involuntary actions such as your heartbeat, breathing and reflexes.

  10. Cerebrum Brainstem Cerebellum

  11. http://www.brainpop.com/health/bodysystems/spinalcord/

  12. Neurons- nerve cells • Neurons are cells that carry information through your nervous system. • The information is carried in what is called a nerve impulse. http://www.brainpop.com/health/bodysystems/neurons/

  13. Three Types of Neurons • Sensory Neurons Pick up stimuli from internal or external environment and converts it to an impulse.

  14. Motor Neurons • Send an impulse to a muscle, and the muscle contracts in response.

  15. Interneuron Located in the brain or spinal cord and carries the nerve impulse from one neuron to another.

  16. Reflexes • A reflex is an automatic response that occurs very rapidly and without conscious control. • The contraction of skeletal muscles is usually controlled by the brain, but in reflexes the muscles react with the involvement of the spinal cord only – not the brain. This protects us from danger.

  17. http://faculty.washington.edu/chudler/chgames.html • http://faculty.washington.edu/chudler/words.html

  18. Sources: • http://www.georgiapainphysicians.com/l2_edu_pharma_mod1_slides.htm • http://www.omsusa.org/pranzatelli-Brain.htm • http://www.unitedstreaming.com

More Related