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32 Cards in this Set
- Front
- Back
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circle of willis is a ____ network of ____ ____ supplying the brain
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circular - blood vessels
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____ vertebral, ____ internal ____ arteries contribute to the circle of willis
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2 - 2 - carotid
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many ____ help curtail inadequate blood supply to the brain
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anastamoses
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anastamoses is the joining of (2)
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nerves - blood vessels
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cerebrum is located in the ____ & ____ cranial fossa
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anterior - middle
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6 lobes in the cerebrum
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frontal - parietal - occipital - temporal - insula - limbic
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the lobes of the cerebrum have many functions in ____ ____
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various regions
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the cerebral cortex refers to
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gray matter
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gray matter contains
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neuron cell bodies
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cerebral cortex is the ____ layer of ____ ____ of the cerebrum
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outer - gray matter
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gray matter of the cortex is also called
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basal nuclei (ganglia)
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basal nuclei are areas of gray matter deep with the
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cerebrum
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basal nuclei receive input from
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cerebral cortex
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basal nuclei monitor & regulate ____ executed by ____ ____
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movements - motor cortex
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basal nuclei regulate intensity of ____ & inhibit ____ ____ (Parkinson's disease)
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movements - unnecessary movements
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define gyri
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folds or hills in the cerebral tissue
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4 main gyri
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precentral - postcentral - superior temporal - cingulate
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define sulci
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shallow grooves or valleys
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4 main sulci of the cerbrum
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central - lateral (sylvian) or fissure - parieto-occipital - calcarine
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fissures are
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deeper groves + valleys
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2 examples of fissure
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longitudinal fissure - transverse fissure
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longitudinal fissure separates
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rt + lt hemisphere
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location of transverse fissure
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between cerebrum + cerebellum
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white mater contains
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myelinated axons
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3 types of fibers in the cerebral white matter
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association fibers - commissural fibers - projection fibers
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association fibers travel to other areas of the ____ hemishpere
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same
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commissural fibers connect areas from one hemisphere to
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the other hemisphere
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3 regions of the commissural fibers
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corpus callosum - anterior commissure - posterior commissure
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corpus callosum is major white matter tract that connects
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rt + lt cerebral hemispheres
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anterior commissure is ____ matter that connect the 2 cerebral hemispheres at the midline
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white
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posterior commissure is a rounded band of
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white matter
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projection fibers descend from ____ towards lower brain areas of ____ ____ or vice-versa
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cortex - spinal cord
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