L11 nervous systems post - Functional Organization of the...

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Functional Organization of the Nervous System Describe how the nervous system is protected and how signals of different forms are transmitted to and from the rest of the body Compare and contrast the form and function of different regions of the peripheral nervous system Predict the consequences of modifications in parasympathetic and sympathetic nervous systems in the maintenance of homeostasis Compare and contrast the basic organization of the central nervous system and the peripheral nervous system of vertebrates Differentiate the 3 subdivisions of the adult brain of vertebrate and name their principal structures and functions Predict the consequences of damage (such as from injury or disease) to different regions of the mammalian brain and spinal cord Compare and contrast the subdivisions of the peripheral nervous system Compare and contrast the form and function of different regions of the mammalian brain • Predict the consequences of damage (such as from injury or disease) to different regions of the mammalian brain Thursday, February 12, 2015
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H.M., the most famous patient in neurology Henry Molaison on his graduation day. •When he was 27, H.M. had a lobotomy to treat epilepsy. - The amygdala and a large part of the hippocampus were removed from both sides of his brain. •Afterwards, H.M. lost the ability for long- term episodic memory. - He could store information — such as a sentence — for about 10 or 20 seconds. Once he stopped thinking about it, there was no way it could re-enter his short- term memory. He had episodic memories from before his surgery and could form new procedural memories. Thursday, February 12, 2015
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Hippocampus and memory Thursday, February 12, 2015
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iClicker: Thursday, February 12, 2015
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Organization of Vert. Nervous Systems Central and peripheral NS. Afferent : brings signal in to the central nervous system (ie: receptor cells and their afferents) Efferent : brings signal from central nervous system out to body Thursday, February 12, 2015
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Organization of Vert. Nervous Systems Outline: Central nervous system: Protection Spinal cord Brain Peripheral nervous system: Thursday, February 12, 2015
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The Vertebrate CNS is Isolated and Protected 1. Meninges: connective tissue that surrounds brain and spinal cord. 2. cerebrospinal fluid (CSF): fills space between the meninges to act as a ‘shock absorber’. 3. Blood-Brain Barrier (BBB): isolates brain from body. pericyte tight junction lumen basal membrane endothelial cell mitocondrion astrocyte end-foot process Thursday, February 12, 2015
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Pathology: Hydrocephalus Cerebrospinal Fluid Thursday, February 12, 2015
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Small lipid soluble molecules can dissolve through the membrane.
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