51. ___________ includes a collection of syndromes that lead to cognitive impairment when the blood supply is cut off to brain cells, causing them to die.  a. Dementia with Lewy bodies b. Undifferentiated schizophrenia c. Vascular dementia d. Bipolar disorder 52. A common cause of vascular dementia is   a. Lewy bodies in the brainstem. b. the depletion of acetylcholine in the brain. c. having one or more strokes. d. beta-amyloid plaques and neurofibrillary tangles. 53. ________ involves a sudden interruption of blood flow to the brain due to a ruptured blood vessel or blockage.  a. Parkinson’s disease b. A stroke c. Frontotemporal dementia d. Dementia with Lewy bodies 54. The behavioral effects of ___________ can be sudden and severe.  a. dementia with Lewy bodies b. Alzheimer’s diseases c. vascular dementia d. all of these 55. A diagnosis of _______ is given when Alzheimer’s and vascular disease coexist with these patients generally having more severe memory and planning problems.   a. frontotemporal dementia b. multi-infarct dementia c. mixed dementia d. undifferentiated dementia 56. In a rare form of dementia called _______, patients experience sudden and bizarre changes in personality and interests.    a. frontotemporal dementia b. vascular dementia c. dementia with Lewy bodies d. occipitoparietal dementia 57. Which of the following statements is/are TRUE regarding other forms of dementia?    a. Vascular dementia is higher in Japan and China than the U.S b. Unlike Alzheimer’s disease, the onset of vascular dementia can be sudden and severe. c. Some individuals with Parkinson’s disease eventually develop Lewy bodies and dementia. d. All of these statements are true. 58. Which of the following is NOT a common cause of non-dementia-related memory problems and sudden changes in behavior?   a. alcohol abuse b. poorly controlled diabetes c. strokes d. depression 59. Which of the following is/are common cause(s) of non-dementia-related memory problems and sudden changes in behavior?   a. depression b. inadequate nutrition c. reactions to medication d. all of these 60. If an older adults eats a diet of refined carbohydrates, this can lead to a(n) __________ deficiency, which is associated with mental confusion.   a. acetylcholine b. magnesium c. potassium d. Vitamin-K