Fall 2017 Chapters 1-2.pptx

Fall 2017 Chapters 1-2.pptx - Welcome to NEURO 1 Lianne Cho...

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Lianne Cho [email protected] Adrianna Wenz [email protected] With slides in part by: Erin Schaeffer Welcome to NEURO 1!
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Adrianna
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Lianne
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Chapter 1 Neuroscience: Past, Present, and Future
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People: Galen : Suggested that cerebrum would receive sensation and cerebellum would control muscles. Descartes : mind-brain dichotomy; behavior through fluid movement Bell: Cut anterior roots of spinal cord. Led to paralysis without sensation loss Magendie: Cut dorsal roots of spinal cord. Led to sensation loss with no paralysis. Broca: Left frontal lobe is crucial for ability to speak.
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White vs Grey Matter White Matter: Neuron fibers that possess a myelin sheath. This myelin sheath leads to increased conduction down the axon of the neuron. Grey Matter: Cell bodies, dendrites, and nerve terminals. (All are demyelinated)
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Central Nervous System v. Peripheral Nervous System -CNS: no regrowth, gray & white matter, brain and spinal cord. Nerves carry both motor and sensory information (bidirectionality) -PNS: regrowth, nerves in the body carry only sensory or motor information. (Opposite directions)
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Chapter 2 Neurons and Glia
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Preparing Brain Tissue
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Nissl Stain Cell Bodies!! Brodman!! Stains RNA in ribosomes – Distinguish neurons + glia – Cytoarchitecture: arrangement of neurons in certain area of the brain
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Golgi Stain Shows a Few Good Neurons Cell body + neurites (axons + dendrites) But not every cell body
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PRACTICE QUESTION!!! 1. You suspect that brain area X has cells with dendritic spines while area Y has cells with smooth dendrites. Which of the following stains would allow you to demonstrate this? a) Nissl stain b) Golgi stain c) Loewi stain d) Galvani stain
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ANSWER 1. You suspect that brain area X has cells with dendritic spines while area Y has cells with smooth dendrites. Which of the following stains would allow you to demonstrate this? a) Nissl stain b) Golgi stain c) Loewi stain d) Galvani stain
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Cajal Gol gi Neuron D octrine/CellTheory - Neurons are not connected but com m unicate across synapses - Correct!
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