A) They contain T lymphocytes and lymphatic tissues do not.
B) They are found in the digestive tract and lymphatic tissues are found in the thorax.
C) They are surrounded by a fibrous capsule and lymphatic tissues are not.
D) They cannot produce antibodies, whereas lymphatic tissues can.
E) They occur throughout the body except in the head.

A) lymphatic vessels.
B) the venae cavae.
C) the spleen.
D) lymph nodes.
E) lymph.

A) the transport of hormones.
B) circulation of nutrients and dissolved gases.
C) defending the body against both external and internal threats.
D) the production and distribution of plasma proteins.
E) the production and maturation of leukocytes.