Pregnancy and constrictive clothing often cause an increase in:

a. neoplasms

b. infection

c. lymphocytes

d. venous pressure

During negative selection of lymphocytes, cells that what? And During positive selection of lymphocytes, cells that?

Why does the sympathetic nervous system cause blood vesselvasoconstriction? Is it because it increases blood pressure soblood can be pumped faster to all areas of your body?

which of the following is NOT a function of lymph nodes?

a. cleansing the blood
b. providing a proliferation site for lymphocytes
c. activating the immune system
d. filtering lymph