Which structure carries excess tissue fluid away from tissue spaces?

• A. Blood Capillaries
• B. Lymphatic Capillaries
• C. Arteries
• D. Veins

Answer: (B)

The structure that removes excess fluid from tissue spaces is the lymphatic capillary. These tiny vessels are highly permeable, with overlapping cells that create tiny openings—like valves—that open to take in interstitial (tissue) fluid when its pressure rises. Once the fluid enters, it becomes lymph and is carried away through larger lymphatic vessels, filtered through lymph nodes, and eventually returned to the bloodstream. This drainage helps prevent swelling and supports immune function; in beauty treatments, stimulating lymph drainage can help move this fluid away from tissues and reduce puffiness. The other options belong to the blood vascular system and aren’t designed to collect and transport excess tissue fluid from spaces between cells.