Flashcard Set Preview
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| 1 |
Meninges
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located between the bone and soft tissues of the nervous system, protects brain and spinal...
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Venticles
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interconnected cavities located within the cerebral hemispheres and brain stem
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| 3 |
choroid plexuses
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tiny reddish cauliflower-like masses of specialized capillaries from pia mater
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cerebrospinal fluid
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clear viscid fluid, that differs in composition from the fluid that leaves the capillaries...
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Spinal nerves
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31 segments- pairs of nerves that branch to various body parts and connect them with the CNS
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Nerve Tracks
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A long bundle of nerve fibers within the CNS having the same origin, function, and termination
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Reflexes
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A rapid, automatic response to a stimulus
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Spinal reflex
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Reflexes whose arcs pass though the spinal cord
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Descending nerve tracts
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Those that conduct motor impulses from the brain to motor neurons reaching muscles and glands
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Ascending nerve tracts
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The tracts that conduct sensory impulses to the brain
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| 11 |
Cerebrum
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Develops from the anterior portion of the forebrain, largest part of the mature brain
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Corpus Callosum
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A deep ridge of nerve fibers that connect the cerebral hemispheres
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| 13 |
Gyri
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ridges separated by grooves, mark the cerebrum's surface
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Sulcus
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Shallow grooves that separate the lobes and make pathways
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Fissure
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Deep groove that separates left and right hemispheres
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| 16 |
Insula
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located deep within the lateral fissure, covered by the frontal, parietal, and temporal lobes
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| 17 |
Cerebral cortex
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thin layer of gray matter that covers the convulutions
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Wernicks area
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plays the primary role in complex thought processing
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| 19 |
Diencephalon
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located between the cerebral hemispheres and above the brain stem. Surrounds the 3rd ventricle...
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Midbrain
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contains bundles of myelinated nerve fibers that join lower parts of the brain stem and spinal...
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| 21 |
Pons
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separates the midbrain from the medulla oblongata. Relays nerve impulses to and from the...
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| 22 |
Medulla Oblongata
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crossover of most verve fibers occurs here; receive and pass on sensory impulses to the thalmus...
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Reticular Formation
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connects centers of the hypothalamus, basal nuclei, cerebellum, and cerebrum in all the ascending...
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| 24 |
Cerebellum
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consists of the two hemispheres and communicates with other parts of the CNS
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| 25 |
Somatic nervous system
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cranial and spinal nerve fibers conscious activities ex> skin, skeletal muscles
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Autonomic nervous system
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viscera > heart, stomach, intestines, and glands, unconscious activities
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