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

Question

Quizplus · Accepted Answer

Lymphatic vessels and/or lymph nodes are the most likely region blocked by these small, thread-like worms since they are responsible for draining excess fluid from tissues and returning it to the bloodstream. Blockage of the lymphatic vessels leads to the accumulation of this excess fluid and subsequent swelling, which can progress to elephantiasis. The other options listed are not directly involved in the drainage of excess fluid from tissues and, therefore, are unlikely to be affected by the parasitic infection.

Elephantiasis Is an Infectious Disease in Which Blockage of the Circulatory