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28-1 Pt II - Southgate Community School District
28-1 Pt II - Southgate Community School District

... – Optic lobes are involved in vision, and olfactory bulbs are involved in the sense of smell. – Vertebrate brains are connected to the rest of the body by a thick collection of nerves called a spinal cord ...
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The NEURON

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The Nervous System: Neural Tissue

... A neuron may innervate (1) other neurons, (2) skeletal muscle fibers, or (3) gland cells. Synapses are shown in boxes for each example. A single neuron would not innervate all three. © 2012 Pearson Education, Inc. ...
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The Nervous System

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Basic Anatomy and Terminology of the Head and Brain Scalp and

... spine. This is called the spinal cord. The spinal cord carries all of the motor and sensory signals to and from the brain and all parts of the body below the head. It is an extension of the brain and as such is a part of the central nervous system or CNS (as opposed to the peripheral nervous system ...
Neural Control II
Neural Control II

... • When an action potential arrives at the end of an axon, it stimulates the opening of voltage-gated calcium (Ca+2) channels; causes a rapid influx of Ca+ into the cell • Rapid influx of Ca+2 causes the synaptic vesicles to fuse with the plasma membrane, and release neurotransmitters by exocytosis • ...
What is memory? How does the brain perceive the outside
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6.2 Transmission of Nerve Impulses

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Neurobiology of infectious diseases - HKU

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Neurons and Glial Cells

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The Biological Perspective

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General principle of nervous system

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Invertebrate Anatomy and Physiology

... • Specialized cells for response to the environment are called nerve cells • No matter what the animal, nerve cells look and function pretty much the same • Primitive invertebrate have nets of nerves distributed throughout the body • Two advances in development of nervous systems: – Some jellyfishes ...
The Autonomic Nervous System - Ashland Independent Schools
The Autonomic Nervous System - Ashland Independent Schools

... • The ANS usually operates without conscious control, though centers in the hypothalamus and brain stem do provide regulation for ANS reflexes. – Sensory receptors called interoceptors located in blood vessels, visceral organs, muscles, and the nervous system monitor conditions in the internal envir ...
Ch 11 Part 2 - Groch Biology
Ch 11 Part 2 - Groch Biology

... 7. Mechanism by which ATP is used to move sodium ions out of the cell and potassium ions into the cell; completely restores and maintains the resting conditions of the neuron. _____ 8. Point at which an axon "fires". _____ 9. Term for a weak stimulus. _____ 10. Self-propagated depolarization. _____ ...
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Optogenetics for Studying the Spinal Control of Movement
Optogenetics for Studying the Spinal Control of Movement

... Actions are the means by which we interact with the world around us. The capacity for voluntary action relies on complex motor circuits involving both cortical/subcortical areas and the spinal cord. Motor commands generated in cortical and sub-cortical motor areas are routed to the spinal cord, whic ...
PSB 4002 - Developmental Psychobiology Laboratory
PSB 4002 - Developmental Psychobiology Laboratory

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Structure of the Nervous System Functional Classes of Neurons

... • When Somatic efferent (alpha) motor neuron  conducts an action potential it causes an  action potential in every muscle fiber in the  motor unit • Every action potential in the somatic efferent  (alpha) motor neurons turns on all the  contractile machinery in every muscle fiber  (cell) in the moto ...
Cognitive Neuroscience
Cognitive Neuroscience

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1 Principles of structure and functioning of nervous system

... preservation of the brain motor systems is an important term of accidental moves of a person. Motor system abnormalities happen in the damage of nervous system by many different factors and represent great importance for the diagnostics of the nosologic form of a disease. Motor abnormalities represe ...
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Neuroregeneration

Neuroregeneration refers to the regrowth or repair of nervous tissues, cells or cell products. Such mechanisms may include generation of new neurons, glia, axons, myelin, or synapses. Neuroregeneration differs between the peripheral nervous system (PNS) and the central nervous system (CNS) by the functional mechanisms and especially the extent and speed. When an axon is damaged, the distal segment undergoes Wallerian degeneration, losing its myelin sheath. The proximal segment can either die by apoptosis or undergo the chromatolytic reaction, which is an attempt at repair. In the CNS, synaptic stripping occurs as glial foot processes invade the dead synapse.Nervous system injuries affect over 90,000 people every year. It is estimated that spinal cord injuries alone affect 10,000 each year. As a result of this high incidence of neurological injuries, nerve regeneration and repair, a subfield of neural tissue engineering, is becoming a rapidly growing field dedicated to the discovery of new ways to recover nerve functionality after injury. The nervous system is divided into two parts: the central nervous system, which consists of the brain and spinal cord, and the peripheral nervous system, which consists of cranial and spinal nerves along with their associated ganglia. While the peripheral nervous system has an intrinsic ability for repair and regeneration, the central nervous system is, for the most part, incapable of self-repair and regeneration. There is currently no treatment for recovering human nerve function after injury to the central nervous system. In addition, multiple attempts at nerve re-growth across the PNS-CNS transition have not been successful. There is simply not enough knowledge about regeneration in the central nervous system. In addition, although the peripheral nervous system has the capability for regeneration, much research still needs to be done to optimize the environment for maximum regrowth potential. Neuroregeneration is important clinically, as it is part of the pathogenesis of many diseases, including multiple sclerosis.
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