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30 Cards in this Set
- Front
- Back
Central Nervous
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Consists of Brain and Spinal Cord
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Peripheral Nervous
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Lies outside the midline portion of your nervous system, carrying sensory info to and motor info away from the central nervous via spinal/cranial nerves
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Somatic Nervous
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Has motor neurons that stimulate skeletal (voluntary) muscle
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Autonomic Nervous
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Has motor neutrons that stimulate smooth (involuntary) and heart muscle
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Sympathetic Nervous
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Stimulation results in responses that help your body deal with stressful events Ex. Dilation of pupils/increased heart rate
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Parasympathetic Nervous
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Stimulation calms your body after sympathetic stimulation. Ex. Restores digestive processes, returning pupils to normal
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Spinal Cord
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Protected by meninges and spinal column.Starts at base of the back up to base of skull, where it joins the brain; Made up of interneurons and glial cells, bathed in cerebrospinal fluid excreted by glial cells
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Brain
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Covered by meninges and protected by the skull.
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Reptilian brain
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Medulla, pons, cerebellum; Maintains homeostasis and instinctive behaviors
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Old mammalian brain
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Septum, hippocampus, amygdale, cingulated cortex, hypothalamus, thalmus; Controls emotional behavior, important to memory and vision.
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New mammalian brain (Neocortex)
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Cerebral Cortex (80%) of brain; Associated with judgement
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Medulla Oblongata
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Where most fibers cross; Results in contralateral control, regulates heart rhythm, blood flow, breathing rate, etc
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Pons
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Includes portion of reticular activating system, critical for arousal, Bridge between hemispheres
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Cerebellum
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Coordinates motor function integrating motion and positional info from the inner ear and muscles
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Thalamus
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Relay “station” for sensory pathways carrying vision, auditory, taste, somatosensory info
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Hypothalamus
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Controls autonomic functions such as body temperature/heart rate, Sets emotions and feelings, Helps biological rhythms
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Amygdala
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Influences aggression/fear, important in formation of sensory memory
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Hippocampus
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Enables formation of long term memory
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Cerebral Cortex
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Receives and processes sensory info and directs movement; Center for higher processes (planning judging, thinking)
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Occipital Lobes
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Info from visual field in processed in opposite sides
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Parietal Lobes
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Somatosensory cortex (for touch sensations), contralateral representation of all body parts
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Frontal Lobes
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Initiates movements and integrates activities of skeletal muscles (contralateral)Broca’s Area in left side controls speech
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Temporal Lobes
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Center for hearing, used for understanding music/tonality, smell is processedWernicke’s Area in left understand language and making meaningful sentences
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Plasticity
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If one region of the brain is damaged, it can reorganize to take of its function
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Glial Cells
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Guide growth of developing neutrons, helps provide nutrition and gets rid of wastes of neurons, provides insulating sheath around neurons
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Neuron
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Receive info, process info, and transit it to the rest of the body
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Cell Body
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Directs synthesis of such substances as neurotransmitters.
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Dendrites
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Capable of receiving info
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Axon
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Emerges from dendrite, which branches are called terminal buttons, and is covered by an insulating myelin sheath
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Neurotransmitters
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Chemicals stored in the structure of the terminal buttons called synaptic vesicles
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