Which of the following is a feature of regulatory T cells (Treg)? (Select all that apply.)
a. Treg express CD8 and control effector cells by inducing apoptosis.
b. Treg express high levels of CD25 (IL-2 receptor ? chain) and secrete pro-inflammatory cytokines such as IFN-?.
c. Physical association between Treg and their target cells is mandatory for Treg function.
d. By interacting with dendritic cells in secondary lymphoid tissue, Treg prevent the interaction and activation of naive T cells.
e. Treg secrete TGF-? and suppress effector T-cell function.
c, d, e
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Identify a guideline to be followed when attending a group workout class for the first time.
A. Always begin with bicep curls before moving to other types of exercise. B. Start with exercises three levels above your current fitness level for an effective workout. C. Drink at least 500 mL of water 10 minutes before a workout. D. If a class requires hand weights, choose light weights first. E. Spend the first week of the fitness program observing the instructor and experienced class members.
What is the definition of muscular strength?
A) the amount of force a muscle can produce repeatedly over 60 seconds B) the amount of force a muscle can produce with a single maximum effort C) the ability to sustain a given level of muscular tension over time D the ability to move the joints through a full range of motion
A medical term that means study of disease is ____________________
Fill in the blank(s) with correct word
The word parts poly- and -dactyly build a medical word that means "condition of the fingers or toes that have no feeling or sensation."
Indicate whether the statement is true or false