Elephantiasis Is an Infectious Disease in Which Blockage of the Circulatory

Multiple Choice

Elephantiasis is an infectious disease in which blockage of the circulatory system by microscopic, parasitic roundworms results in a dramatic swelling of the tissues in the lower half of the body.What region is most likely blocked by these small, thread-like worms?

A) the superior vena cava
B) lymphatic vessels and/or lymph nodes
C) the left atrium of the heart
D) a pulmonary artery