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20 Cards in this Set
- Front
- Back
What are the characteristics of CSF?
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*derived from plasma
*isoosmotic with blood *contains virtually no cells *contains no protein *rapid turnover *clearance medium and shock absorber |
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What is the function of the blood-brain barrier?
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providesa way for nutrients but not waste products to enter CSF
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What are the fuctions of CSF?
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*remove waste products
*shock absorber *provides a homestatic enviroment for the brain *prevents the brain from hitting bone during movement |
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What are the characteristics of a frontal lobe lesion?
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*Marked changes in personality
*problems with initative *easily irritable, angry |
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What were some side effects of frontal lobotomies?
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*concentration impaired
*decrease in initative *decrese in short term memory *decrease in inhibitions |
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What are the characteristics of a temporal lobe lesion?
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*disturbance in auditory perception/senesation
*selective attention impaired to auditory/visulal stimuli *distubance in language perception *altered sex behavior *altered personality *impairment in memory |
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What is associated with the damage of the basal ganglia?
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uncontrolled movements
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What are the functions of the basal ganglia?
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*programming over voluntary movement
*role in cognition, recieve input for entire cortex *first output to frontal lobe |
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What are the 3 major functions of the thalamus?
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*sensation
*arousal *association |
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What are the functions of the hypothalamus?
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regulation of arousal, autonomic functions, and endocrine regulation
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What is the fuction of the cerebral peduncles?
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motor control of skeletal muscle
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What are the 3 major functions of the cerebellum?
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*input realted to the position of the body in space
*patterns of muscle movement *control of muscle tone |
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What is membrane potential?
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the electrical difference across the membrane
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What factors detirmine resting membrane potential?
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*chemical factors
*membrane properties *electrical factors *ionic pumps |
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What is an absolute refractory period?
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can't induce a second action potential regardless of stimulus
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What is a relative refractory period?
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a second action potential can be induced witha strong enough stimulation
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What does tetrodotoxin do?
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blocks voltage gated Na+ channels
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Which subuint of the voltage gated channel contains the pore?
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alpha
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Which segement is the voltage sensor?
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S4
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What is the selectivity filter of the voltage gated channel?
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P region that connects S5 and S6
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