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31 Cards in this Set
- Front
- Back
Hormones
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chemical messangers, mostly those manufactured by the endocrine glands, that are produced in one tissue and developed in another
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Adrenal Glands
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a pair of endocrine glands just above the kidney, secrets hormones epinephrine(adrenaline) and norephrine(noradrenaline) which help arouse the body in times of stress.
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Pituitary Gland
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The endocrinesystems most influential gland. Under the influence of the hypothalamus, regulates growth and control of other endocrine glands.
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Lesion
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Tissue distruction, is naturally or experimentally caused distruction of brain tissue.
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electroencephalogram (EEG)
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an amplified recording of the waves of electrical activity that sweep across the brains surface. These waves are measured by electrodes placed on the scalp
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CT (Computed Tomography) scan
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a series of X-ray photographs taken from different angles and combined by a computer into a composite represesntation of a slice through the body. Also called CAT scan
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PET (positron emission tomography) scan
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a visual display of brain activity that detects where a raidoactive form of glucose goes while the brain preforms a given task.
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MRI (magnetic resonance imaging)
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a techique that uses magnetic fields and raido waves to produce a computer generated images that distinguish amoung different types of soft tissue.
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Brainstem
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the oldest part of the central core of the brian, beginning where the spinal cord swells as it enters the skull; responsible for automatic survival functions
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Medulla
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the base of the brainstem; controls heart beat and breathing.
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Reticular formation
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a nerve network in the brainstem that plays an important role in controlling arousal
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Thalamus
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The brains sensory switchboard; located on top of the brainstem; it directs messages to sensory reciving areas in the cortex and transmits replies to the cerebellum and medulla
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Cerebellum
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The "little brain" attached to the rear of the brainstem; it helps coordinate voluntary movement and balance
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Limbic systems
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a doughnut-shaped system of neural structures at the border of brainstem and cerebral hemispheres; associated with emotions such as fear and agression and drives such as for food and sex.Includes hippocampus, amyedala, and hypothalamus.
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Amygdala
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two almond shaped clusters that are componets of the limbic system and are linked to emotion
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Hypothalamus
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A neural structure lying below the thalamus; it directs several maintance activities ( eating, drinking, and body temp.) helps govern the endocrine system via the pituatry gland, and is linked to emotion.
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Cerebral Cortex
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the intricate fabric of interconnected nural cells that covers the cerberal hemispheres; the bodies ultamate control and information processing center.
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glial cells
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cells in the nervous system that support nourish and protect neurons.
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Frontal Lobes
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the portion of the cerebal cortex lying just behind the forehead. Involved in speaking and in musscle movemnts and in making plans and judgements.
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Pariental lobes
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the portion of the cerebral cortex lying at the top of the head towards the rear.includes the sensory cortex.
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occipital Lobes
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the portion of the cereberal cortex lying at the back of the head;includes visual areas which receive information from the opposite visual field
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Temporal lobes
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the portion of the cereberal cortex lying roughly above the ears; includes auditory areas, each of which recieves auditory information primarily from the opposite ear
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Motor Cortex
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an area at the rear of frontal lobes that controls voluntary movements.
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Sensory Cortex
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the area at the front of the pariental lobes that registers and processes body sensations
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Association Areas
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areas of the cereberal cortex that are not involved in primary motor or sensory functions; rather they are involved in higher mental functions such as learning rembering thinking and speaking
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aphasia
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imparment of language usually caused by left hemisphere damage either to Broca's area (imparing spaeking) or to Wernicke's area (imparing understanding)
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Broca's area
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controls language expression- an area of the frontal lobe usually in the left hemisphere, that directs the muscle movement involved in speech
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Wernicke's area
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controls language reception- a brain area involved in language comphrension and expression; usually in the left temporal lobe.
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plasticity
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The brains capacity for modification , as brain reorganization following damage (espically in children) and experiments on the effects of experience on brain development.
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Corpus Callosum
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THe large band of neural fibers connecting the two hemispheres and carring massage between them.
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Split Brain
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a condition in which two hemispheres are isolated by cutting the connection of two fibers (mainly those of Courpus Callosum) between them.
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