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31 Cards in this Set
- Front
- Back
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Peripheral Nervous System
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Part of the nervous system that lies outside the brain and spine
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Central Nervous System
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Part of the nervous system contained within the brain and spine.
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Lateral Fissure
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Large groove or valley that divides the b rain into the left and right hemisphere.
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Central Sulcus
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groove or valley that runs left to right and divides the frontal love from the parietal lobe.
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Lateral Fissure/Sulcus (Sylvian Fissure)
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groove or valley that divides the temporal love from the parietal lobe
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Parieto-occupital sulcus
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groove or valley that divides the parietal lboe from the occipital lobe.
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Precentral Gyri
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ridge in front of Central Sulcus
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Postcentral Gyri
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Ridge in front of Central Sulcus
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Four types of neuroglia in the CNS
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Astrocytes
Oliodendrites Microglia Ependymal (Tanycytes) |
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Function of Astrocytes
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Support and structure
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Funtion of Oligodendrites
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myelin producing cells brain and spine.
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Function of Microglia
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monitors health of other glia (macrophases of CNS)
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function of Ependymal (Tanycytes)
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Line the 3rd ventricle.
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Two types of nueroglia in PNS
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Schwann Cells
Satellite Cells |
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What areSchwann Cells?
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myelin producing cells in the PNS
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What do Satellite Cells do?
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myelinate cell bodies but unknown function.
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Blood-Brain-Barrier
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protective barrier around the CNS that prevents or restricts the exchange of solutes between the blood and the brain.
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Two ares of the brain without BBB?
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Area Postrema
Periventricular Organs |
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Translational cytoplasm
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area containing polysomes where protein synthesis occurs.
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Nissl Substance
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made of of stacks of rough endoplasmic reticulum and free polysomes.
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What are the two functional domains of a neuron?
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Axon
Dendrite |
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What does the Axon do?
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responsible for sending messages to other neurons via NT./
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What do dendrites do?
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responsible for receiving input from other neurons.
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En Passant synapses
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synapses along the length of the axon.
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Where is the Terminal Bouton
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lies at tip of axonal processes
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What is the Axon Hillock
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part of t he cell where the axon originates (has a lack of Nissl substance and no protein sythesis occurs).
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Where is the initial segment and what does it do?
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lies betweeen the axon hillock and the axon. Has a specialized membraine containing a large amount of voltage sensitive ion channels. Most action potentials start here.
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Two main categories of membrane proteines?
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Integral and Peripheral.
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Where are Integral proteins?
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include the receptors for neurotransmitters and polypeptide growth factors. They ahve segments that are embedded in the lipid bilayer of htee cells OR are covalently bound to molecules that inser into the membrane.
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Wharte are peripheral proteins?
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localized on the cytoplasmic surface of t he cells membrane
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3 classes of cytoplasmic structural proteins (cytoskeletons)
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Microtubules
Microfilament Intermediate Filaments |
