Question

An organism that causes obstruction of lymphatic system in humans is___

• A. Borrelia burgdorferi
• B. Brucella abortus
• C. Yersinia pestis
• D. Wuchereria bancrofti

Answer 1

The Correct Option is D

The correct answer to the question "An organism that causes obstruction of lymphatic system in humans is___" is Wuchereria bancrofti.

Here is the detailed explanation and reasoning:

1. Understanding Lymphatic Filariasis:
   • Lymphatic filariasis, also known as elephantiasis, is a parasitic disease caused by thread-like filarial worms.
   • The condition primarily affects the lymphatic system, leading to a blockage which results in swelling of limbs and other parts of the body.
2. Role of Wuchereria bancrofti:
   • \(Wuchereria \ bancrofti\) is a parasitic worm responsible for causing lymphatic filariasis.
   • When mosquitoes carrying the larvae of this parasite bite humans, the larvae enter the bloodstream and grow into adult worms within the lymphatic system.
   • The buildup of these worms causes obstruction, impairing the normal flow of lymphatic fluid.
3. Ruling Out Other Options:
   • \(Borrelia \ burgdorferi\) causes Lyme disease, not related to the lymphatic obstruction.
   • \(Brucella \ abortus\) is responsible for brucellosis, a bacterial infection spread from animals to humans, causing fever but no obstruction to the lymphatic system.
   • \(Yersinia \ pestis\) is the bacterium causing plague, affecting mainly the lungs and bubonic regions but not known for causing lymphatic obstruction.
4. Conclusion:
   • Therefore, the organism that causes obstruction of the lymphatic system, leading to lymphatic filariasis, is Wuchereria bancrofti.