Lymph is formed from
Correct answer: A. tissue fluid that drains into blind ending lymph capillaries
- A. tissue fluid that drains into blind ending lymph capillaries
- B. blood plasma filtered by the kidney
- C. the secretion of the lymph nodes
- D. bile leaving the liver
Explanation
Plasma is forced out of the capillaries at their arterial end to become tissue fluid, most of which returns to the blood at the venous end, and the surplus enters lymph capillaries as lymph. It travels in one direction only, through nodes and along the thoracic duct, and is finally returned to the blood at the subclavian veins. Lymph therefore resembles plasma but has far less protein and no red cells.
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About Lymphatic System
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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