"Axon" Essays and Research Papers

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    Nervous Tissue

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    THE STATUS OF RESEARCH ON THE REPAIR AND REGENERATION OF NERVOUS TISSUE OF THE CENTRAL NERVOUS STYSTEM           The Status of Research On The Repair Of Nervous Tissue Of The Central Nervous System Lekisha Johnson Virginia College At Austin   THE STATUS OF RESEARCH  ON THE REPAIR AND REGENERATION OF NERVOUS TISSUE OF THE CENTRAL NERVOUS                   Today‚ most treatments for damage brain or spinal cord aim to relieve symptoms and limit further damage. But recent research into regeneration mechanism

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    other to relay and receive information. A neuron consists of a cell body‚ multiple dendrites‚ and an axon. The cell body serves as the command center for the neuron‚ it contains DNA (deoxyribonucleic acid) and produces the energy used by the cell. The dendrites are the receptors of the neuron‚ and receive signals sent from other neurons. The axon‚ a long spine like process‚ consists of multiple axon terminals; the site of connection to other neurons. During

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    Muscle Skeletal Muscle

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    NAME LAB TIME/DATE _ Microscopic Anatomy and Organization of Skeletal Muscle Skeletal Muscle Cells and Their Packaging into Muscles 1. Use the items in the key to correctly identify the structures described below. g; perimysium c; fascicle Key: a. b. c. endomysium epimysium fascicle fiber myofibril myofilament perimysium sarcolemma sarcomere sarcoplasm tendon 1. 2. 3. 4. 5. 6. 7. connective tissue ensheathing a bundle of muscle cells bundle of muscle cells contractile unit of muscle

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     in  the  glial  scar‚  cell  implantation  to  reconnect  the  circuitry   or  provide  a  tissue  bridge  for  axons  to  grow  through  (green  spheres)‚  ion  channel  expression  to  re-­establish  neuronal  activity  to   that  of  the  juvenile  state  (blue  dots)‚  and  anti-­Nogo  treatment  to  block  myelin  inhibitors.  Combinations  of  these  strategies  increase   axon  regeneration  and  plasticity‚  re-­connection  of  the  circuitry  (functional  synapses  represented  by  red

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    Nervous Concept Map

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    reaction to a stimulus. 3. Student answers will vary. Sample answer: Two factors that influence the speed with which an impulse is conducted are the diameter of the axon and whether or not it is myelinated. In the absence of myelination‚ increasing the diameter of the axon will increase the speed of impulse conduction. The large axons in the organisms are responsible for the escape or withdrawl reflexes. tion‚ judgment‚ and speech become impaired. 3. Alcohol is absorbed into the blood through the

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    Campbell’s AP Biology Notes Chapter 48: Nervous Systems Command and Control Center * The human brain contains an estimated 100 billion nerve cells‚ or neurons * Each neuron my communicate with thousands of other neurons * Functional magnetic resonance imaging (fMRI) is a technology that can reconstruct a 3-D map of brain activity * The results of brain imaging and other research methods reveal that groups of neurons function in specialized circuits dedicated to different tasks

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    The Nerve Cell

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    Differences within the cell include its dendrites and axons. Dendrites are branch-like things that extend from the cell body and receive messages from other neurons (Boeree). The axon then transmits these signals to other neurons. Both are one of the three most important organelles in the neurons‚ including the nucleus. The three work efficiently not unlike a machine where the nucleus controls the whole cell while the dendrites receive messages and the axon sends them to the brain. Neurons

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    types of ion channels: Channels Areas on the Neuron Type of Potential Passive Dendrites‚ Cell body‚ & Axon Resting membrane potential Chemically gated Dendrites & Cell body Synaptic Potential Voltage gated Axon Hillock & Axons Action Potential 8. From the quiz‚ place an “X” by the characteristics of voltage-gated sodium channels. _____ Always open __X__ Found along the axon __X__ Important for action potential __X__ Opened and closed by gates _____ Found on the dendrites and cell

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    Neuroscience

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    supply nutrients and oxygen‚ perform clean up tasks‚ and insulate one neuron from another so that their neural messages are not scrambled. Oligodedreocytes: helps to create the myelin sheath. Purpose speed up communication in the brain. Insulate axons. Makes Neural transmissions. Microglia: Special immune cells in the brain. They can detect unhealthy and damaged neurons and therefore‚ they can help in removing those damaged cells. - detect viruses and bacteria in the brain - Chew them up and

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    EXERCISE 3: Neurophysiology of Nerve Impulses |ACTIVITY 1: The Resting Membrane Potential |Answers | |The nervous system contains two general types of cells: neuroglia cells and |C- Neurons | |nerves. |

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