Memory T cells, effector T cells, and naïve T cells share several characteristics. Which of the following descriptions could only be said of memory T cells?
A. Memory T cells are activated by any APC.
B. Memory T cells are only found in one location and do not circulate.
C. Memory T cells express CD44, CD62L, and CCR7.
D. Memory T cells recognize MHC class I or class II peptides displaying antigen molecules.
E. Memory T cells depend upon co-stimulatory signals from CD2/ LFA-3, CD45R/ CD22, and LFA-1/ ICAM-2.
A
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Studies on the relationship between exercise and musculoskeletal injuries point to which of the following conclusions?
A. The amount of activity is directly related to the risk of musculoskeletal injury. B. The amount of change in activity is directly related to the risk of musculoskeletal injury. C. A given amount of a new activity is more likely to cause an injury in a sedentary person than a person who is already physically active. D. Each of these statements is correct.
According to federal guidelines, what should people do before trying prescription weight loss drugs?
A. try lifestyle modification for at least six months B. get surgical treatment for obesity C. try over-the-counter weight loss aids for at least six months D. seek professional counseling
An autopsy is only performed postmortem.
Answer the following statement true (T) or false (F)
Men and women generally tend to respond to stress in very similar ways.
Answer the following statement true (T) or false (F)