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UM KIN 330 - Nervous System

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KIN 330 1st Edition Lecture 1Outline of Current Lecture I. Functional levels of organization of the nervous systemA. Central Nervous SystemB. Peripheral Nervous Systema. Afferent Sensory input – Receptorsb. Efferent Motor output – mm/glandsC. Autonomic Nervous Systema. Sympatheticb. ParasympatheticII. Basic Terminology of the nervous systemA.Neurona.Sensoryb.Motora.InterneuronsB.Supporting Cellsa.Schwann cellsb.Satellite cellsIII. Functional anatomy of the nervous systemA. OrganizationB. Anatomy of Motor NeuronsCurrent LectureI. Functional levels of organization of the nervous systemD. Central Nervous System – Includes brain, spinal cord, spinal nerves. Contains communication lines between the CNS and the rest of the bodyE. Peripheral Nervous System – Conducts impulses from receptors such as the skin, eyes, etc, to CNSa. Afferent Sensory input – Receptorsi. Voluntary – Somatic - Regulates smooth and cardiac muscle and glandular tissue. Conducts impulses from the CNS to cardiac smooth muscle and glandsii. Involuntary - Autonomicb. Efferent Motor output – mm/glands – Conscious control of the skeletal musculature that conducts impulses from the CNS to skeletal muscles. F. Autonomic Nervous SystemThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.a. Sympathetic – Mobilizes body systems during fight or flightb. Parasympathetic - Homeostasis, promotes housekeeping functions, conserves energyII. Basic Terminology of the nervous systemC.Neuron – “Star” of the Nervous System. Long lived, amitotic (don’t divide), long cells and have a high metabolic rate (quickly decay if damaged)a.Sensory - INputb.Motor - OUTputb.Interneurons - CommunicatorsD.Supporting Cells – Glial cellsa.CNS: astrocytes, microglia, ependymal cells, oligodendrocytes b.PNS: schwann cells, satellite cellsi.Schwann cells: surround and form myelin sheath around nerve cell axons.ii.Satellite cells: control the chemical environment around a neuronIII. Functional anatomy of the nervous systemC. Organization: one neuron my innervate up to 2000 individual muscle fibers oras few as 5-6 muscle cells. Branch profusely at the terminals that secrete neurotransmitters. Each fiber spreads throughout a


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