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felix may 2nd year neuroscience Investigation into the response to
felix may 2nd year neuroscience Investigation into the response to

... Glial cells constitute a major part of the central and peripheral nervous systems, there being about 30 times more glial cells than neurons. Glia are non-neuronal cells that support neuronal function by optimising the local environment and providing trophic factors and nutrients, having a homeostati ...
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File

... In the PNS, the myelin sheath is formed by ________________________ cells. o The __________________________ cells wrap themselves around the _________________ and lay down multiple _________________________ of _________________________________. o The nucleus and cytoplasm are in the ________________ ...
sample - McLoon Lab
sample - McLoon Lab

... Lecture 20 chemical senses 33. Taste receptor cells have their somas in the tongue and send axons into the brainstem via cranial nerves. True or false? A. true ...
Chapter 14 - WordPress.com
Chapter 14 - WordPress.com

...  Enlargements areas of coordination of incoming and outgoing messages o Cervical enlargement o Lumbar enlargement  Conus medullaris + filum terminale = cauda equina  The spinal cord is divided into 31 segments, each associated with a pair of o Dorsal root ganglia- contain cell bodies of sensory n ...
Module 1:Human Nervous System Lecture 5:Spinal cord The
Module 1:Human Nervous System Lecture 5:Spinal cord The

... The sensory neuron carries the prick sensation from the painful stimulus. Through the association neurons this message is relayed to the motor neuron which in turn carries them to the muscles to cause the withdrawal reflex. Concurrently the message is conveyed to the brain. Our nervous system has th ...
Nervous System
Nervous System

... fluid (which acts as a cushion) around the brain and spinal cord.  Oligodendrocytes: Branched like astrocytes, but with less branches. They form myelin sheathes, which are used for insulation. ...
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Slide

... Overview of the visual system as related to visual prostheses. In most retinal dystrophies, the first order photoreceptor neurons (rods and cones) are lost. Thus, second order neurons (bipolar cells) are the earliest viable target, typically for subretinal and suprachoroidal devices. Epiretinal devi ...
Star-cross`d neurons: astroglial effects on neural
Star-cross`d neurons: astroglial effects on neural

... and investigation of whether at least a subset can establish the correct pattern of long-distance connections to the superior colliculus. Potential roles for GFAP and vimentin What is it about the production or presence of the intermediate-filament proteins GFAP and vimentin that limits neuronal int ...
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... – Na+ needs to move back out – K+ needs to move back in – both are moving against concentration gradients • need a pump!! A lot of work to ...
ANATOMY - Northeast Metro 916 Intermediate School District
ANATOMY - Northeast Metro 916 Intermediate School District

...  Epithelial tissue covers surfaces and lines body cavities, also forms glands.  Connective tissue holds parts of the body together. It may be hard as in bone, or soft as in vascular tissue (Blood vessels)  Both types repair easily. ...
THE NERVOUS SYSTEM
THE NERVOUS SYSTEM

...  A disorder that attacks the CNS  Damages the outer part of some nerves  This causes messages not to be sent properly  It will affect your thinking and memory  Cerebral Palsy  Damage to the brain while the brain is growing ...
Microsoft Word 97
Microsoft Word 97

... pressures and stresses among the muscles and other connective tissues within bodies tend to escape nerve fatigue. Why is it important to organisms that they continue to receive impulses from these two types of receptors? ...
Nervous System
Nervous System

... An impulse begins when a neuron is stimulated by the axon of another neuron or by the environment. Na+ pores open and the flood of Na+ ions makes the inside positive. This reversal of charges, from negative to positive is called a nerve impulse, or an action potential. ...
Nervous System Lecture Notes Page
Nervous System Lecture Notes Page

... Repolarization Required before another Action Potential Sodium-Potassium Pump moves Na+ out & K+ in (Requires Energy) ...
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Drugs Hanson 4

... the receiving neuron when stimulated, causing release of neurotransmitters or increasing activity in target cell. • Inhibitory synapse diminishes likelihood of an impulse in the receiving neuron or reduces the activity in other target cells. ...
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... • Teams will be the Tables you are sitting at now. • Winner of number guess will choose the first question. Each team will have 1 person compete at a time. • If one team answers incorrectly another team has a chance to answer • If you think you know the answer raise your hand • The score will be kep ...
4Central Nervous System (CNS)
4Central Nervous System (CNS)

...  Associated with ____________________________________________________________ _________________________________________________________________________ Brain – Cerebellum  Second largest part of the human brain  _____________________________________________ to produce coordinated movements so tha ...
Restoring axonal localization and transport of transmembrane
Restoring axonal localization and transport of transmembrane

... (CNS) does not regenerate, several experimental interventions have been trialled with successful albeit limited instances of axonal repair. We highlight here some of these approaches including extracellular matrix (ECM) modification, cellular grafting, gene therapy-induced replacement of proteins, a ...
Nature Versus Nurture
Nature Versus Nurture

... § This includes strengthening these connections as you might expect Ÿ Remember that as you interact with others you change the structure of their nervous system and they change yours! § This also includes, yes….. removing and weakening synapses ...
The NERVOUS SYSTEM
The NERVOUS SYSTEM

... relay to CNS  Somatic sensory receptors  External receptors: touch, temp, pressure, sight, etc.  Proprioceptors: monitor position and movement ...
Nervous System Function
Nervous System Function

... Myelinated neurons allow action potentials to ‘jump’ between unmyelinated gaps (Node of Ranvier) along the neuron Action potential and nerve impulse are faster Myelin sheath acts as insulation prevents depolarization Nodes of Ranvier are not insulated and can depolarize as a result ...
Chapter 9 Nervous
Chapter 9 Nervous

... Neuron immediately begins to repolarize. K ions diffuse rapidly out of the cell. Normal resting potential is reached. Impulses are transmitted to other neurons by a synapse. Neurotransmitters such as acetylcholine (ACH) help. ...
Biology Notes: The Nervous System and Neurons
Biology Notes: The Nervous System and Neurons

... Putting it ALL Together: Animation with Steps  1. ________________________________________________________________________________________  2. ________________________________________________________________________________________  3. ________________________________________________________________ ...
Motor neuron
Motor neuron

... Inhibitory neurotransmitter. May be involved in eating and sleep disorders. Note that the effects of neurotransmitters depend on the receptor A given neurotransmitter can trigger different types of receptors with different results! ...
neurons and the nervous system
neurons and the nervous system

... neuron.  Carries messages away from the cell body  Myelin Sheath  An insulating layer around an axon. Made up of Schwann cells.  Nodes of Ranvier  Gaps between Schwann cells.  Function: Conduction of the impulse. (Situation where speed of an impulse is greatly increased by the message ‘jumping ...
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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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