Which of the following is true of dementia?
A. It is marked by an overall decline of mental functioning.
B. It begins for most victims during middle adulthood.
C. It affects only a person's memory functions.
D. It has no organic cause.
Answer: A
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42 years old, Stephanie Goldstein developed occasional blurred and double vision, numbness and ‘pins and needles' in her arms and legs (paresthesia), and bladder incontinence
After a month of these symptoms she went to her doctor, who sent her to the neurology specialist. An MRI scan revealed areas of demyelination in the central nervous system (CNS), and Stephanie was diagnosed with the autoimmune disease multiple sclerosis (MS). Which of the following best explains why some people are susceptible to the development of MS? a. Negative selection of autoreactive T cells occurs during T-cell development. b. Apoptosis of autoreactive B cells occurs in the bone marrow during B-cell development. c. An inability to produce immunological tolerance toward CNS-derived constituents results in the generation of self-reactive lymphocytes. d. An immunodeficiency inhibiting somatic recombination of immunoglobulins and T-cell receptors results in impaired lymphocyte development. e. Regulatory T cells fail to activate autoreactive T cells in secondary lymphoid organs.
The prefix for external is:
A. Exo- B. Trans- C. Ex- D. Peri-
As of 2007, which gender contracts a higher percentage of HIV/AIDS?
A) men B) women C) Percentages are roughly equal. D) None of the answers is correct; there are too many other factors to consider.
A compound fracture does not involve a break in the skin
Indicate whether the statement is true or false