A)right lymphatic duct.
B)subclavian veins.
C)inferior vena cava.
D)superior vena cava.
E)dural sinus.

A)circulation of nutrients
B)circulation of hormones
C)production,maintenance,and distribution of lymphocytes
D)production,maintenance,and distribution of plasma proteins
E)blocking the action of histamine

A)contain the largest collection of lymphoid tissue in the body.
B)are the site of T cell maturation.
C)stimulate lymphocyte stem-cell division.
D)purify lymph before it reaches the veins.
E)remove abnormal blood cells and components.