The largest lymph duct called thoracic lymph duct drains into:
Correct answer: A. Subclavian Vein
- A. Subclavian Vein
- B. Renal Vein
- C. Pulmonary Vein
- D. Hepatic Portal Vein
Explanation
a) Subclavian VeinThe subclavian veins are major veins located in the upper chest region, near the collarbone. While they play a role in draining blood from the upper limbs, head, and neck, they are not directly associated with the drainage of the largest lymph duct.
This question appeared on the UHS MDCAT 2010 paper, which you can sit online with every answer explained.
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The lymphatic system returns excess tissue fluid to the bloodstream and supports immune defence through lymph, lymph vessels, lymph nodes, the spleen, thymus and tonsils. It also transports absorbed fats from intestinal lacteals, which distinguishes lymphatic circulation from the blood vascular system.
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