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Chapter 6

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Term
Definition
Afferent nerves   show
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show Branch of the nervous system that controls involuntary body functions  
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Cell body   show
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show The brain and spinal cord  
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show Branches of a neuron that collects stimuli and transport them to the cell body  
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Efferent nerves   show
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Myelin sheath   show
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Neurilemma   show
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Neuroglia   show
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show The uninsulated gaps in the myelin sheath of a nerve fiber where the axon is exposed  
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Peripheral nervous system   show
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show Branch of the nervous system that stimulates the skeletal muscles  
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show The intersecton between a neuron and another neuron, a muscle, a gland, or a sensory receptor  
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show Involuntary stimuli transmitted to cardiac and smooth muscle  
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show the ability of a neuron to transmit a nerve impulse  
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Depolarixed   show
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Nerve Impulse   show
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show a condition that occurs when the inside of a cell membrane is more negatively charges that the outside  
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show simple rapid involuntary programmed responses to stimuli  
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show the time between the completion of the action potential and repolarization  
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Repolarixation   show
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show the rapid skipping of an action potential from node to node on myelinated neurons  
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Somatic reflexes   show
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Cerebellum   show
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show The larges part of the brain consisting of the right and left hemisperes  
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Diencenphalon   show
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Epithalamus   show
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show the uniformly positioned deep grooves in the brain  
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Frontal lobes   show
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show a portion of the diencephalon which regulates functions such as metabolism, heart rate, and blood pressure  
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Lobes   show
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Medulla oblongata   show
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show three protective membranes that surround the brain and spinal cord  
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Midbrain   show
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occipital lobes   show
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show sections of the brain located behind the frontal lobes; integrate sensory information from the skin. internal organs muscles, and joints  
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show the section of the brain located below the midbrain that plays a role in regulating breathing  
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Primary motor cortex   show
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Primary somatic sensory cortex   show
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Spinal cord   show
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show the most inferior portions of the brain; responsible for speech, hearing, vision, memory, and emotion  
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show the largest portion of the diencephalon, which communicates sensory and motor information between the body and the cerebral cortex  
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Cranial nerves   show
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Craniosacral division   show
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show The division of posterior spinal nerves that transmit motor impulses to the posterior trunk muscles and relay sensory impulses from the skin of the back  
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show A delicate, connective tissue that surrounds each nerve fiber  
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show The tough outer covering of a nerve  
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show A mass of nervous tissue composed mostly of nerve-cell bodies.  
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Norepinephrine   show
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show Mass of nerve cell bodies close to the spinal cord  
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Pernieurium   show
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show Complex interconnections of nerves  
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Postganglionic neuron   show
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show The first neuron in a series that transmits impulses from the CNS  
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show Neural transmitters that branch from the left and right sides of the spinal cord  
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show The sympatheric system of nerves that lies near the thoracic and lumbar regions of the spine  
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Ventral ramus   show
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show Condition involving a progressive loss of brain function with major consequences for memory, thinking, and behavior  
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show A group of nervous system disorders resulting from brain damage before or during birth, or in early infance  
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show An organic brain disease involving loss of function in two or more areas of cognition  
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Epilepsy   show
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show AN infection-induced inflammation of the meniges surrounding the brain and spinal cord  
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Multiple sclerosis   show
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show Disorder characterized by loss of function below the neck  
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show A chronic nervous system disease characterized by a slowly spreading tremor. muscular weakness, and rigidity  
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show Disorder characterized by loss of function in the lower trunk and legs  
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show Mild or severe trauma that can result form a violent impact to the head.  
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