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[Psych 202 UW Fall 2016] Neural Anatomy In class Day 2+3+4

by: Chi Tran

[Psych 202 UW Fall 2016] Neural Anatomy In class Day 2+3+4 Psych 202

Marketplace > University of Washington > Psychology > Psych 202 > Psych 202 UW Fall 2016 Neural Anatomy In class Day 2 3 4
Chi Tran
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About this Document

In class notes
Kathleen Lauren Graham
Class Notes
biopsychology, Psychology, Cognitive Psychology
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This 2 page Class Notes was uploaded by Chi Tran on Sunday October 9, 2016. The Class Notes belongs to Psych 202 at University of Washington taught by Kathleen Lauren Graham in Fall 2016. Since its upload, it has received 4 views. For similar materials see Biopsychology in Psychology at University of Washington.

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Date Created: 10/09/16
Neural Anatomy Monday, October 3, 2016 1:39 PM • Neurons ○ Cell body: the cell's life support center ○ Dendrites: Receives messages from other cells ○ Axon: Passes messages away from the cell body to other neurons, muscles, or glands ○ Terminal branches of axon: form junctions with other cells ○ Neural impulse ( Action potential): electrical signal traveling down the axon ○ Myelin sheath: cover the axon of some neurons and helps speed neural impulse ○ Axon hillock: "decide whether to fire or not) • Types of neurons: ○ Multipolar (motoneuron) ○ Unipolar(sensory neuron) ○ Bipolar (interneuron) • Glia cells: ○ Oligodendrocytes § Their extensions wrapped around the axon § They are myelin sheath § Places there are not cover my the oligodendrocytes are called "nodes of ranvier" § Roles: □ Insulation of axons in the central nervous system ○ Schwann cells: the oligos of the PNS § Each segment is its own cell • Myelin: ○ Fatty substance on axons -> electrical signals reach the ends of neurons faster ○ Its presence on many axons creates an appearance of "white matter" (versus "gray matter" • Astrocyte ○ Nourish neurons ○ Transfer nutrient from the blood vessel to the cell and bring toxics from neurons ro blood vessels ○ (versus "gray matter" • Astrocyte ○ Nourish neurons ○ Transfer nutrient from the blood vessel to the cell and bring toxics from neurons ro blood vessels • Microglia: ○ Engulf and destroy debris ○ Cleaning around neurons • Types of glia: ○ Astrocyte ○ Oligodendrocytes ○ Schwann cells ○ Microglias ○ NG2 Cells • Glia also communicate • Left and Right Brain ○ BOTH hemispheres are used for creativity AND logical thinking • Main lobes of the brain ○ Frontal lobe ○ Temporal lobe Parietal lobe ○ ○ Occipital lobe § Motocortex are at the end of frontal lobe, near the beginning of the parietal lobe § Right behind it it the touch cortex § Vision cortex is in the occipital lobe § Audition cortex is in the temporal lobe • TERMS: what to call the terrain ○ Sulcus(dip low) ○ Gyrus(high round) ○ Deep dip : fissure • Terms: What to call groups of neurons Cell bodies Axons • CNS Nucleus/nuclei Tract(s) PNS Ganglion/ganglia Nerve(s) ○ EXCEPTION: the "basal ganglia" is a collection of specific nuclei in the brain


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