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Description : Check out this medical presentation on Neurology, which is titled "Nervous System", to know about the organization of the nervous system.

Tags : Neurology, Nervous System, organization

Published on : Aug 29, 2021 | Views : 1726 | Downloads : 12

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Slide 1-

Nervous System Central Nervous System (CNS) Peripheral Nervous System (PNS)
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Organization of the nervous system
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Organization of the nervous system
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The Nervous System Nervous System: Consists of all the nerve cells. **It is the body’s speedy, electrochemical communication system. Central Nervous System (CNS): the brain and spinal cord. Peripheral Nervous System (PNS): the sensory and motor neurons that connect the central nervous system (CNS) to the rest of the body.
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Organization of the nervous system
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The central nervous system Brain Spinal cord A collection of neurons and supportive tissue running from the base of the brain down the center of the back Protected by spinal column 4
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Central Nervous System – The Spinal Cord and Reflexes
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Organization of the nervous system
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The Nerves Nerves consist of neural “cables” containing many axons. They are part of the peripheral nervous system and connect muscles, glands, and sense organs to the central nervous system.
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Divisions of the Peripheral Nervous System There are two divisions of the peripheral nervous system: the somatic, or voluntary portion the autonomic, or involuntary portion Somatic Nervous System: The division of the peripheral nervous system that controls the body’s skeletal muscles (voluntary). Autonomic Nervous System: Part of the PNS that controls the glands and other muscles (involuntary).
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Organization of the nervous system
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The autonomic portion of the peripheral nervous system governs involuntary, visceral functions…such as heart and breathing rate, blood pressure, etc. It is divided into two systems: Sympathetic Nervous System: Division of the ANS that arouses the body, mobilizing its energy in stressful situations. Parasympathetic Nervous System: Division of the ANS that calms the body, conserving its energy. Autonomic Nervous System (ANS)
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Organization of the nervous system
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The Sympathetic Nervous System Mobilizes the body’s resources for emergencies and creates the fight-or-flight response. “Arouses”
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Organization of the nervous system
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The Parasympathetic Nervous System Activates processes that conserve bodily resources… slowing heart rate, reducing blood pressure, etc. “Calms” (rest and digest)
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Recap
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See “Fight or Flight” in action in this short cartoon: http://cmhc.utexas.edu/stressrecess/Level_One/fof.html
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Review In everyday situations the sympathetic and parasympathetic nervous system work together to keep you in a steady internal rate. What happens if these are out of wack? .
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Journal How does information flow through your nervous system as you pick up a fork? Summarize this process.