Term
| spinal cord is __ inches long, ________________________ |
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Definition
| 18, tapers slightly at posterior end |
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Term
| spinal cord lies within ______ along the ______, ______, ______ & ______ |
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Definition
| spinal cavity, meninges, CSF, adipose tissue, blood vessels |
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Term
contain _ ____ grooves
1.)____________
2.)____________ |
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Definition
| 2 deep, anterior median fissure, posterior median sulcus |
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Term
| _ bundles of _______ called _______ project from each side of the ________, both join together to form a _____________ (compose the ___) |
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Definition
| 2, nerve fibers, nerve roots, spinal cord, spinal nerve, PNS |
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Term
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Definition
| carries sensory info TO spinal cord |
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Term
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Definition
| carries motor info AWAY from the spinal cord |
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Term
| 2 general functions of the spinal cord |
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Definition
1.) provides conduction routes to and from brain
2.) reflex center for all spinal reflexes |
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Term
| spinal cord is composed of ______(to brain) and _______(from brain) tracts. in the ___, bundles of nerve fibers are called _____ rather than _____ |
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Definition
| ascending, descending, CNS, tracts, nerves |
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Term
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Definition
| neurons from substania nigra degenerate and do not produce normal amounts of dopamine; without dopamine, cerebral nuclei produce excess voluntary movement |
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Term
| cerebrovasuclar accident CVA |
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Definition
| stroke, a hemorrhage from or cessation of blood flow through cerebal vessels; lack of oxygen = neuron death, if in motor area person can no longer voluntarily move the parts of the body controlled by the affected area(s) |
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Term
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Definition
| permanent, crippling damage to motor control areas of the brain; damage is present at birth or occurs shortly after and remains throughout life. causes: prenatal infections or diseases of the mother; mechanical trauma to the head before, during or after birth; nerve-damaging poisons; and reduced oxygen supply to the brain |
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Term
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Definition
| degenerative disease affecting memory, attention span, intellectual capacity, personality and motor control |
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Term
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Definition
| affects memory, lesions develope in cortex during middle to late adult years |
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Term
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Definition
| inherited disease characterized by chorea (involuntary, purposeless movements), progresses to severe dementia and death, ages 30-40 shows up, death around 55, gene causes body to make huntington protien incorrectly |
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Term
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Definition
| caused by prions(pathogenic protien molecules); degenerative disease of CNS |
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Term
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Definition
| sudden bursts of abnormal neuron activity that result in temporary changes in brain function |
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Term
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Definition
| recurring or chronic seizure episodes |
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