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  • Mechanisms of Axon Guidance

    711 Words  | 3 Pages

    Axons are sensitive and their respond depend on the local environment. When the tectum is removed, retinal axons grow toward the missing tissue, demonstrating that optic axons utilize these neighbourhood signals as opposed to a long-run diffusible attractant from the tectum as they grow along the optic tract (Taylor, 1990). In the event of a small piece of the optic tract neuroepithelium is turned 90° preceding the axons enter it, then they become misoriented when they enter the pivoted transplant

  • Multiple Sclerosis And The Central Nervous System

    1605 Words  | 7 Pages

    Multiple sclerosis (MS) is a degenerative and potentially debilitating disorder that affects the spinal cord and brain, collectively known as the central nervous system. Multiple sclerosis evolves gradually throughout time and is considered to be auto-immune, which means the immune system mistakenly attacks healthy cells and tissues that are supposed to be within the body. According to Medscape, symptoms consist of, but are not limited to, sexual problems, ataxia (the inability to control certain

  • Evaluation Of A Case Study

    1353 Words  | 6 Pages

    Analysis of a case Study Background information about this client in this case study is as followers. The patient is a 30 year old female who has been experiencing signs and symptoms of weakness, numbness, visual disturbances and mood swings over for couple months now. Since client symptoms were becoming a repetition, so CT test was done and the result confirmed a demyelination of the white matter of brain and spinal cord, helping the doctor to conclude this is a factor to why the client is

  • Autonomic Nervous System

    2204 Words  | 9 Pages

    The synapse at the axon terminal of the postganglionic neuron and the target effector cell (in the form of muscle or gland) uses epinephrine/norepinephrine (adrenaline/noradrenaline) (AK Lectures, 2014) The parasympathetic division however, is concerned with “rest and digest”

  • Multiple Sclerosis : A Nervous System Disease That Affects The Brain And Spinal Cord

    869 Words  | 4 Pages

    the central nervous system. Nerve cells or neurons are the structural units of the nervous system. Neurons transmit messages as nerve impulses from one part of the body to another. These neurons contain processes which are called dendrites and axons. The axon is the “conducting region” of a neuron since a

  • The Brain and Parkinson´s Patients

    1247 Words  | 5 Pages

    One man, one brain and one hundred trillion synapse. It takes a moment for one to experience damage to ones brain and neurons within the brain and a lifelong journey of recovery. The brain consists of many neurons which are single nerves. This essay intends to discuss whether there is effective recovery from brain damage by describing the intricate process of neural networks in the brain. It will include the fascinating and continuously evolving process of neuroplasticity. It will elaborate on the

  • Motor Unit Of A Single Motor Neuron

    959 Words  | 4 Pages

    contraction. A single alpha motor neuron can innervate a large number of skeletal muscle fibres since motor neuron (approximately 420,000) are outnumbered by muscle fibres (approximately 200 million). This is achieved by the branching of a single motor axon in the muscle to synapse on numerous distinct fibres that are well spread over a large area within the muscle so the contractile force would scatter uniformly. Motor units are sorted according to speed of contractions, amount of tension generated

  • A Brief Note On Mediates Contact Dependent Homophilic

    1022 Words  | 5 Pages

    dendrites create a two-dimensional meshwork in which developing branches frequently encounter other dendrites (different from CNS where axons and dendrites form 3D by interaction) • when deficient in Dscam function, individual dendrites do not recognize sister branches and fail to initiate repulsion, leading to a

  • Axonal Nerve Injuries

    1665 Words  | 7 Pages

    and our current knowledge of nerve physiology and regeneration vastly exceeds our current repair capabilities. Poor outcomes of peripheral nerve injury are largely due to the slow process of axonal outgrowth. After nerve injury, severed proximal axons with intact cell bodies can grow up

  • Nervous System

    2092 Words  | 9 Pages

    information to the brain to be analyzed. Neurons live both in and outside the central nervous system. Understanding how the neurons work is vital to understanding the nervous system. Neurons The neuron has two important structures called the dendrite and axon, also called nerve fibers. The dendrites are like tentacles that sprout from