What are catecholamines?
A. endorphins produced in the brain
B. chemicals that results in the relaxation response
C. stress hormones that damage the cardiovascular system
D. chemicals responsible for psychosomatic diseases
E. chemicals released during massage
C. stress hormones that damage the cardiovascular system
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The skin is the largest organ of the human body
Indicate whether the statement is true or false.
Which factors on the surfaces of B cells and T cells, through their interaction, are required to allow germinal center formation to occur?
A. CD40 and CD40L B. Fas and FasL C. CD28 and CD80/86 D. TCR and MHC class II E. None of the above
Drugs that do not need a physician's prescription and can be purchased easily by consumers are often referred to by the acronym ________.
Fill in the blank(s) with the appropriate word(s).
According to a recent survey, almost half of college students had ____ in their bank accounts at some point in the last 12 months.?
A) ?more than $2,000 B) ?more than $1,000 C) ?less than $1,000 D) ?less than $500 E) ?less than $100