Anatomy Practice Exam

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Study for the Anatomy Exam with flashcards and multiple-choice questions. Each question includes hints and explanations. Prepare confidently!

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What is the primary role of the lymphatic system?

To produce urine
To cleanse the blood
To circulate hormones
To return excess tissue fluid to the circulatory system

The correct answer is: To return excess tissue fluid to the circulatory system

The primary role of the lymphatic system is to return excess tissue fluid to the circulatory system, which is essential for maintaining fluid balance in the body. The lymphatic system collects fluid that leaks out of blood vessels into the interstitial spaces, preventing tissue swelling (edema) and ensuring that the fluid is not lost from the bloodstream. This collected fluid is then transported through lymphatic vessels and ultimately released back into the circulatory system at the subclavian veins. In addition to fluid balance, the lymphatic system plays crucial roles in immune function, as it transports lymphocytes and other immune cells throughout the body. However, the most fundamental function relevant to this question is its role in returning excess tissue fluid, highlighting its importance in homeostasis and overall health.