Valencia Dr. Leroy Coleman
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| CNS | Central Nervous System which consist of the brain, the spinal cord, and the peripheal
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| PNS | Peripheal Nervous System which includes all nervous tissue outside the CNS
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| Nervous System Consist of 2 Subdivisions | Central & Peripheal
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| Clusters of neuron cell bodies located outside the CNS are called | Ganglia
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| Which functional divisons of the nervous system includes the SNS and ANS | Motor
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| In the PNS,components of the afferent division include | Sensory Neurons
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| Sensory Afferent Division | Somatic and Visceral Sensory Nerve Fibers Conduct impulses from the receptors
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| Motor Efferent Division | Motor Nerve Fibers Conduct Impulses from the CNS effectors (musles and glands)
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| ANS | Autonomic Nervous System
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| Ans Divided into 2 subdivisions | Sympathetic & Parasympathetic
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| Sympathetic | Arises in Spinal Cord Flight of Fight (excited)Increase heartrate, Increased blood pressure
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| Parasympathetic | Arises in Brain Feed or Breed (relaxed)increased digestion, reproduction, urination
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| Brachial Plexuses | Formed by anterior Rami of C5-T1, innervates pectoral girdle, and entire upper limbs
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| Sensory Nervous System | Transmits impulses from the PNS to the CNS includes pain touch pressure and temp
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| Neural Crest | as neural tube forms some of ectodermal cells from the tube migrrate to form several layers of cells
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| Neural Tube | the neural folds approach each other and fuse thus converting the neural plate
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| Mulitipolar Neurons | usually have several dendrites and one axon In brain and spinal cord
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| Bipolor Neurons | one main dendrite and one axonInretina of evey in inner ear and in olafactory
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| Dendrite | Afferent unput or sensoryshort input from another axon at a sunapsis of sensory receptor
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| Axon | Efferent output or motorlongmakes the nerve fiberconvered with axolemma
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| Interneurons | Multipolar. many dendrites. In the cns.Brain communicates with different areas of itself recieves many inputs has many outputs
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| Motor Neurons | Multipolar recieves information from many other interneurons tocause depolarization of the axonsends infoto an effector organ
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| Sensory Neursons | Unipolar one process that is the sourch for both the sensory and motaar end
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| Special Sensory Neurons | Found only in the special sensory prgans eye nose ear
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| Neuroglial Cells of the CNS-GLIAL TYPES (4) | Astocyte, Microglial, Ependymal, Oligodendrocyte
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| Astrocyte | Star Shaped CellsAttached to neurons capillaries and pia mater in CNS Blood Brain Barrier
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| Microglial | Small star shapedReside in CNSeat any debris that makes it past the blood brain barrier
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| Ependymal Cells | Cuboidal to ColumnarLine the Ventricles Cliated to move CSF
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| Oligodendrocytes | Send processes that form thin sheets of the cell forms the white matter of the CNS
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| PNS Support Cells (2) | Satellite & Schwann
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| Satellite Cells | Surround the neuron body of sensory neurons in ganglia
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| Schwann Cells | Make the myelin sheath for groups of axonsUnmyelinated nerves have Scwann Cells that only partially surround the axons
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| Somatic Senses | include tactile sensations touch pressure vibration itch and tickle thermal senstaions warm and cold pain sensationsand proprioceptive sensations
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| Visceral Senses | provide info about conditions within internal organs
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| Unipolar Neurons | dendrites and one axon that are fused together to form a continuous process that emerges from the cell body
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| Spatial Summation | summation of postsynaptic potentials in resonse to stimuli that occur at different lovations in the membrane of a postsynaptic cell at the same time
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| Temporal Summation | summation pf postsynaptic potentials in resonse to stimuli that occur at the same location in the membrane of the postsynaptic cell but at different times
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| Acetylcholine | Best Studied NeurotransmitterReleased by many PNS neurons and bo some CNS neurons. Excitatory
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| Epinephrine | Serve as hormonesCells of the adrenal medulla the inner portion of the adrenal gland release them into bloodExcitatory & inhibitory
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| GABA | found only in CNSControls stimulationAlcohol increases effect
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| Seratonin | Many side effects more in females related to histamine the drug that causes inflammationMainly Inhibitory
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| Dopsmine | more in males feel good hormoneExcitatory & Inhibitory
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| Presynaptic Neuron | A neuron sending info to another
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| Postsynaptic Neuron | A neuron receiving info from another
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| Cervical Plexuses | is formed by the roots of the first four cervical nervessupplies the skin and muscles of the head neck and superior part of the shoulders and chest
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| Lumbar Plexuses | Minimal interminging of fibers in the lumbar plexus. on either side of the firt four lumbar vertebrae the lumbar plexus passes obliquely outward between teh superficial and deep heads of the psoas major muscle
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| Olfactory Nerve | Smell I
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| Optic Nerve | Sight II
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| Oculomotor Nerve | Eye Movements IIISomatic
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| Trochlear Nerve | Pulls Eye Down IVSomatic
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| Trigeminal Nerve | 3 Sets of Twins Feel where face is and whats going on V Somatic
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| Abducens Nerve | Lateral Movements of the Eye VISomatic
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| Facial Nerve | Facial Expressions VIIVisceral
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| Vestibulocochlear | Get Info From Ear Equlibrium VIII
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| Glossopharyngeal | Feels our throat and tell what to do IXSomatic & Visceral
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| Vagus | Throat XSomatic & Visceral
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| Accessory | Helps Spinal Nerves Moves Neck XISomatic
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| Hypoglossal | Below tongue affects hyoid musle XIISomatic
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