🗊Презентация nervous system

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The Nervous System Dr Usama ALAlami
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The Nervous System Dr Usama ALAlami

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Learning Outcomes To describe the major components of the Central, Peripheral and Autonomic Nervous systems. To understand the functions of these components. To explain how a nervous impulse is transmitted. To explain the underlying physiology behind the lesions/damage that occurs in the nervous system.
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Learning Outcomes To describe the major components of the Central, Peripheral and Autonomic Nervous systems. To understand the functions of these components. To explain how a nervous impulse is transmitted. To explain the underlying physiology behind the lesions/damage that occurs in the nervous system.

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Functions of the nervous system The nervous system is responsible for: - sensory perception - cognitive functions - motor functions - regulatory functions
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Functions of the nervous system The nervous system is responsible for: - sensory perception - cognitive functions - motor functions - regulatory functions

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Functions of the nervous system Collectively, these diverse activities can be grouped into three basic functions: - sensory input - integration of information - motor output
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Functions of the nervous system Collectively, these diverse activities can be grouped into three basic functions: - sensory input - integration of information - motor output

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Organisation of the Nervous System Central nervous system (CNS), brain and spinal cord Peripheral nervous system (PNS), all nervous tissue outside the CNS
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Organisation of the Nervous System Central nervous system (CNS), brain and spinal cord Peripheral nervous system (PNS), all nervous tissue outside the CNS

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Cells of the nervous system Neuron. Principal cell of the nervous system - electrically excitable Typically, neuronal structure includes: cell body dendrites axon synaptic terminals myelin sheath
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Cells of the nervous system Neuron. Principal cell of the nervous system - electrically excitable Typically, neuronal structure includes: cell body dendrites axon synaptic terminals myelin sheath

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Axons and Dendrites Axons Each neurone has a single axon Branches along axon = axon collaterals Conduct impulses away from cell body Dendrites Usually many - Highly branched Receives impulses and conduct impulses towards cell body
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Axons and Dendrites Axons Each neurone has a single axon Branches along axon = axon collaterals Conduct impulses away from cell body Dendrites Usually many - Highly branched Receives impulses and conduct impulses towards cell body

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Myelin Sheath White lipid-rich substance Myelin electrically insulates nerve fibre and increase the speed of nerve impulses Gaps in the myelin sheath are called nodes of Ranvier
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Myelin Sheath White lipid-rich substance Myelin electrically insulates nerve fibre and increase the speed of nerve impulses Gaps in the myelin sheath are called nodes of Ranvier

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Central Nervous System Consists of the Brain and Spinal Cord
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Central Nervous System Consists of the Brain and Spinal Cord

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The Brain Cerebral cortex: cognition, senses, movement Cerebellum: coordination of muscle contraction Thalamus: relay center Hypothalamus: homeostasis Limbic System: instincts, emotions Brain Stem: medulla controls breathing, blood pressure, heart rate
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The Brain Cerebral cortex: cognition, senses, movement Cerebellum: coordination of muscle contraction Thalamus: relay center Hypothalamus: homeostasis Limbic System: instincts, emotions Brain Stem: medulla controls breathing, blood pressure, heart rate

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Parts of the Brain Cerebrum Thalamus Hypothalamus Cerebellum Midbrain Pons Medulla Oblongata
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Parts of the Brain Cerebrum Thalamus Hypothalamus Cerebellum Midbrain Pons Medulla Oblongata

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Parts of the Brain
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Parts of the Brain

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