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Set up Cornell Notes on pg. 35 Topic: 29.4 Central and Peripheral Nervous System

29.4 Central and Peripheral Nervous System. 2.1 Atoms, Ions, and Molecules. Set up Cornell Notes on pg. 35 Topic: 29.4 Central and Peripheral Nervous System Essential Question(s) : 1. Draw your own example of a reflex arc.

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Set up Cornell Notes on pg. 35 Topic: 29.4 Central and Peripheral Nervous System

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  1. 29.4 Central and Peripheral Nervous System 2.1 Atoms, Ions, and Molecules Set up Cornell Notes on pg. 35 • Topic: 29.4 Central and Peripheral Nervous System • Essential Question(s): 1. Draw your own example of a reflex arc KEY CONCEPT The central nervous system interprets information, and the peripheral nervous system gathers and transmits information.

  2. Types of Neurons “Story” Tree Map • Share your Tree Map with your Table • Choose the one you like the best • Be ready to share (assign a reader)

  3. KEY CONCEPT The central nervous system interprets information, and the peripheral nervous system gathers and transmits information.

  4. Parts of the Nervous System Tree Map Peripheral Nervous System (PNS) Central Nervous System (CNS) Function Function Somatic N.S. Brain Autonomic N.S. Spinal Cord Function Example Function Example Reflexes Cerebellum Function Brainstem Function Cerebrum Examples Examples Function Function Parasympathetic N.S. Sympathetic N.S. Examples Pons Function Function Examples Medulla Oblongata Midbrain Examples Function p.885-890 Function Function Examples

  5. The Nervous System :Components and Function (2m41s) • Add at least 5 additional notes to your tree map

  6. The nervous system’s two parts work together. • The Central Nervous System (CNS) includes the brain, and spinal cord. • Function: Processes information • The Peripheral Nervous System (PNS) includes four systems of nerves • Function: links the CNS to muscles and organs.

  7. midbrain Brainstem pons medulla oblongata The CNS: • The brain has three parts. 1. cerebrum controls thought, movement, emotion 2. cerebellum located in back of skull, balances the actions of muscles so body can move smoothly 3. brain stem controls basic life functions (breathing, heart beat)

  8. midbrain pons medulla oblongata • midbrain controls some reflexes • pons regulates breathing • medulla oblongata connects the brain and spinal cord and controls heart function, swallowing, coughing, vomiting • The brain stem has three parts.

  9. interneuron Stimulus motor neurons sensory neuron • sensory neuron sends impulse to spinal cord • spinal cord directs impulse to motor neuron • does not involve the brain!!!! • The spinal cord controls reflexes.

  10. Reflex arc- A simple pathway, including only a few neurons, that carry out the simplest responses…reflexes. Reflexes – automatic, subconscious responses to external or internal stimuli • Maintain homeostasis by controlling: heart rate, breathing rate, blood pressure, digestion, swallowing, sneezing, coughing, and vomiting

  11. Reflexes (55s)

  12. Label the parts of this reflex arc: 2 6 4 1 Spinal Cord 5 3 Key: Effector Motor Neuron Receptor Interneuron Sensory Neuron Stimulus

  13. 2 Receptor 6 Effector 4 Interneuron 1 Stimulus Spinal cord 5 motor neuron 3 Sensory neuron

  14. CNS: The Spinal Cord (2m57s)

  15. The Peripheral Nervous System: Collection of nerves that links the CNS to muscles and other organs (Sensory neurons/motor neurons) The somatic nervous system regulates voluntary movements Ex: Walking The autonomic nervous system controls involuntary functions Ex: Digestion • sympathetic nervoussystem: action and stress (Fight or Flight) • parasympathetic nervous system: calms the body, conserves energy *Maintain homeostasis

  16. Adrenaline: Flight or Fight Response (6m36s)

  17. 1. Sensory receptors in PNS generate an impulse • The CNS and PNS pass signals between one another. • PNS passes impulse to CNS 2.CNS interprets impulse • CNS passes impulse to PNS. 3. PNS stimulates a response

  18. The Peripheral Nervous System (3m)

  19. If you have a question, you will raise your hand to ask it. How do your CNS and PNS work together to allow you to raise your hand? Your CNS passes a signal to a motor neuron in your PNS causing you to raise your hand.

  20. EQ: Make your own reflex arc P. 34 • Make sure to label all parts • Name the receptors/effectors involved • CANNOT deal with a burn

  21. ReceptorSensory neuronInterneuron Motor neuronEffector

  22. Nervous System- Frog Dissection (4m50s-14m33s)

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