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31 Cards in this Set
- Front
- Back
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gyri |
elevated ridges of brain |
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sulci |
shallow grooves of brain |
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fissures |
deeper grooves of brain |
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grey matter |
neuronal cell bodies, composes cortex and internal nuclei |
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white matter |
deeper tissue below cortex, composed of myelinated fiber tracts |
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longitudinal fissure |
divides left and right hemispheres |
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central sulcus |
single deep frontal fissure that separates frontal lobes from parietal lobes |
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lateral sulcus |
fissure that divides temporal lobe from parietal lobe |
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pre central gyrus |
primary motor cortex; ridge found in frontal lobe anterior to central sulcus; responsible for voluntary movement of skeletal musc |
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post central gyrus |
primary somatosensory area; found in parietal lobe posterior to central sulcus |
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frontal lobe |
motor |
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parietal |
sensory |
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temporal |
hearing and smell |
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occipital |
vision |
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olfactory bulbs (location and func) |
part of diencephalon input for smell |
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olfactory tracts |
part of diencephalon send olfactory info to temporal lobe |
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optic nerves |
part of diencephalon sends info from retina to brain |
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optic chiasm |
part of diencephalon where the fibers of the optic nerves cross |
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optic tracts |
part of diencephalon send visual info back to occipital lobe |
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infundibulum |
part of diencephalon stalk of pituitary gland |
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mammilary bodies |
part of diencephalon located inferior to optic chiasma |
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cerebral peduncles |
midbrain fiber tracts connecting brain to lower CNS- motor |
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pons |
brainstem moto and sensory fiber tracts connecting brain to lower CNS |
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medulla oblongata |
brainstem fiber tracts (pyramids) that run from motor areas of the cerebrum to spinal cord; houses ANS center (controls HR, BP, resp) |
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decussation of pyramids |
brainstem crossover point for the tracts passing thru the medulla |
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cerebellum |
projects dorsally from under the occipital lobe composed of 2 hemispheres which are convoluted |
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corpora quadrigemina |
located on post. portion of the midbrain four prominences: 2 superior colliculi and 2 inferior colliculi |
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superior colliculi |
visual reflext center |
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inferior colliculi |
auditory reflex center |
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spinal cord |
originates from medulla oblongata |
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cranial nerves |
12 pairs (part of PNS) serve head and neck (except vagus which extends to viscera) all except first 2 arise from brain stem |
