chapter 15

1.		In which kind of seizure is consciousness not lost? Your Answer: simple partial seizure
		Correct!
2.		Children with Tay-Sachs disease Your Answer: are missing a vital enzyme, so their lysosomes cannot remove certain waste products.
		Correct!
3.		The tonic phase of a grand mal seizure begins when Your Answer: motor cortex neurons fire continuously.
		Correct!
4.		The same abnormal microscopic structures develop in the brains of patients with Down's syndrome and Your Answer: Alzheimer's disease.
		Correct!
5.		AIDS dementia appears to be caused by Your Answer: the death of axons and dendrites. Correct Answer: entry of excessive amounts of calcium into neurons.
		Incorrect. Try Again.
6.		The dense core of Lewy bodies found in the brains of people with ______ contain ________. Your Answer: Alzheimer's disease; beta-amyloid Correct Answer: Parkinson's disease; aggregations of misfolded alpha-synuclein
		Incorrect. Try Again.
7.		When normal prion protein began to be destroyed at 12 weeks of age in genetically modified mice, Your Answer: cells in the brain compensated by increasing production of normal prion protein. Correct Answer: the brain degeneration ceased.
		Incorrect. Try Again.
8.		If untreated, inherited metabolic disorders such as pyriodoxine dependency and galactosemia damage Your Answer: the meninges. Correct Answer: cerebral white matter.
		Incorrect. Try Again.
9.		The difference between normal prion protein and infectious prion is Your Answer: normal prion protein is essential for life. Correct Answer: the way the protein is folded.
		Incorrect. Try Again.
10.		Mutations of the presenilin gene _____ of the long form of beta-amyloid. Your Answer: interfere with the production Correct Answer: cause the production
		Incorrect. Try Again.
11.		Down syndrome Your Answer: is an hereditary disorder. Correct Answer: results from an extra 21 chromosome.
		Incorrect. Try Again.
12.		A mass of cells whose growth is uncontrolled and which serves no useful function is a(n) Your Answer: tumor.
		Correct!
13.		Treatment for phenylketonuria (PKU) consists of early diagnosis and Your Answer: life-long supplemental phenylalanine. Correct Answer: a diet low in phenylalanine.
		Incorrect. Try Again.
14.		Benign tumors Your Answer: do not cause brain damage. Correct Answer: have a distinct border.
		Incorrect. Try Again.
15.		Secretases are Your Answer: filaments of tau protein. Correct Answer: enzymes that cut the beta-amyloid precursor molecule in pieces.
		Incorrect. Try Again.
16.		The most common cause of encephalitis is a virus Your Answer: found in bird droppings. Correct Answer: transmitted by mosquitoes.
		Incorrect. Try Again.
17.		Fetal alcohol syndrome results Your Answer: from as little as a single drinking binge.
		Correct!
18.		Multiple sclerosis is more likely to strike Your Answer: people born in later summer and fall. Correct Answer: people whose childhood was spent far from the equator.
		Incorrect. Try Again.
19.		The immediate cause of neuron death following a stroke is the presence of Your Answer: unabsorbed calcium. Correct Answer: excessive amounts of glutamate.
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20.		Caspase is a(n) _______ that plays a role in _______. Your Answer: virus; transmissible spongiform encephalopathy Correct Answer: enzyme; apoptosis.
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21.		Mutation of the parkin gene permits the formation of toxic levels of Your Answer: presenilin. Correct Answer: alpha-synuclein.
		Incorrect. Try Again.
22.		Hemorrhagic strokes cause brain damage by Your Answer: exerting pressure on surrounding tissue.
		Correct!
23.		Fetal tissue transplants into the brains of Parkinson patients are an attempt to Your Answer: increase the sensitivity of remaining dopamine receptors. Correct Answer: reestablish the secretion of dopamine in the neostriatum.
		Incorrect. Try Again.
24.		Rabies vaccine is only effective if Your Answer: injected through the abdominal wall. Correct Answer: administered during the incubation period.
		Incorrect. Try Again.
25.		Malignant tumors are deadly because these tumors Your Answer: All of the above are correct.
26.		Brain seizures that result in convulsion must involve the Your Answer: motor system.
27.		The most common form of seizure disorder noted in children is Your Answer: a spell of absence.
28.		An alcoholic who abruptly stops drinking may experience a seizure because Your Answer: of a sudden release from the excitatory effects of the drug. Correct Answer: this abrupt withdrawal results in overly activated NMDA receptors.
29.		Obstructive strokes are caused by Your Answer: malformed blood vessels. Correct Answer: thrombi or emboli that block blood vessels in the brain.
30.		______ represent(s) a therapy for stroke that does not cause excitotoxic injury when infused into brain. Your Answer: Drugs that activate NMDA receptors Correct Answer: The anticoagulant desmoteplase
31.		______ is a key risk factor for stroke. Your Answer: Cigarette smoking Correct Answer: All of the above are correct.
32.		A key primary symptom or sign of fetal alcohol syndrome is Your Answer: the presence of stuttering. Correct Answer: abnormal facial development.
33.		Which of the following is true of Tay-Sachs disease? Your Answer: The symptoms of Tay-Sachs disease begin to show at four months of age. Correct Answer: All of the above are correct.
34.		The cause of Down syndrome involves Your Answer: abnormal cell division of an egg from the mother.
35.		The disease known as ______ is associated with the consumption of tainted human flesh. Your Answer: kuru
36.		The cause of Parkinson's disease has been traced to Your Answer: degeneration of dopamine neurons within the nigrostriatal system.
37.		The appearance of Parkinson's disease in a person who has NO family history of that disorder would be classified as a ______ case. Your Answer: congenital Correct Answer: sporadic
38.		The primary cognitive deficit associated with Alzheimer's disease involves Your Answer: development of swelling of the meninges of the brain. Correct Answer: a type of anterograde amnesia similar to that of Korsakoff's syndrome.