Which of the following is NOT a function of lymphatic vessels?

• A. return of excess tissue fluid to the bloodstream
• B. return of leaked proteins to the blood
• C. delivery of nutrients to tissues
• D. transportation of absorbed fat from the intestine to the blood

Answer: (C)

Verified step by step guidance

1. Understand the primary functions of the lymphatic system, which include maintaining fluid balance, absorbing fats from the digestive tract, and providing immune defense.
2. Recognize that lymphatic vessels are responsible for returning excess tissue fluid and leaked proteins back to the bloodstream, which helps maintain fluid balance in the body.
3. Identify that lymphatic vessels also transport absorbed fats from the intestine to the blood, specifically through structures called lacteals in the small intestine.
4. Consider the role of blood vessels, not lymphatic vessels, in delivering nutrients to tissues. Blood vessels, particularly capillaries, are responsible for nutrient exchange with tissues.
5. Conclude that the delivery of nutrients to tissues is not a function of lymphatic vessels, as this is primarily the role of the circulatory system.