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Nervous system

Nervous system. Communicates Regulates Remembers. Cells. The primary cells of the nervous system are called neurons. Neurons. The dendrites receive information from the synapse The cell body processes the information Axons send the information to another cell electrically

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Nervous system

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  1. Nervous system Communicates Regulates Remembers

  2. Cells • The primary cells of the nervous system are called neurons.

  3. Neurons • The dendrites receive information from the synapse • The cell body processes the information • Axons send the information to another cell electrically • The Schwann cells make a special insulation called a myelin sheath so the electricity travels faster. • Axon terminals release chemicals called neurotransmitters that send the message across the synapse to the next cell (dendrite)

  4. Your homework over vacation • Use recycled materials, and build a 3D model of a motor neuron. Be sure to label Structure: • Axon, axon terminals, cell body, dendrite, myeline sheath, schwann cells, nodes of Ranvier, nucleus,skeletal muscle. • Explain function of each part . • We’ll put them up and make a reflex arc all around the class.

  5. Synapse

  6. Tissues • Nerves • Fat • Muscles • Blood • Skin

  7. Organs • Brain • Spinal chord • nerves • Muscles • Sensory receptors • eyes,ears,nose,tongue,skin

  8. Central nervous systemCNS Brain and spinal chord Interprets

  9. Brain The 3 parts of the Brain: Cerebrum: thinking, moving, sensing Cerebellum: Balance coordination, muscle tone Brain stem: Regulate breathing, heart rate, communication to cerebrum

  10. Sensory Motor parts of the cerebrum Frontal lobe: reasoning, speech, muscle control Parietal Lobe: sensing, feeling Occipital Lobe: vision Temporal Lobe: hearing language

  11. Left Brain/Right Brain

  12. Inside the brain (Sagital section)

  13. Spinal chord

  14. How does our brain feel?The blue stripe controls feeling.the yellow stripe controls movement.

  15. What body parts have the most feeling? According to the brain.

  16. What body parts require the most brain power to move?

  17. What would you look like if your brain space determined your biggest parts?

  18. Peripheral Nervous System,PNSreceives signals from the senses,sends them to the CNSresponds to the signal

  19. Reflex arc Knee jerk reaction Pain reflex The sensory receptors pick up a stimulus and change it into electrical impulses. The sensory or afferentnerve. Carries the message to the CNS. It’s axon is covered with myelin which is white so this is called white matter. The interneuron is found in the grey matter of the spinal chord. This is mostly cell bodies. The motor orefferent nerve transmits a signal to muscle and makes it react. This can be voluntary (Skeletal muscles) or involuntary (smooth and cardiac muscles)

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