Humans Infected with Some Types of Parasitic Worms Develop a Condition

question 49

Multiple Choice

Humans infected with some types of parasitic worms develop a condition called elephantiasis, which is characterized by swelling of the limbs. Which of the following would be the most likely cause of elephantiasis?

• A) The infected human's immune system is fighting the worms.
• B) The worm infection is causing a decrease in cardiac output.
• C) The worms are blocking the lymph vessels.
• D) More blood is flowing through precapillary sphincters.

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