Which statement describes the transport capacity concept in lymphatic drainage?

• A. The maximum amount of lymph that can be transported through the lymphatic system
• B. The speed of lymph flow
• C. The amount of lymph produced by tissue
• D. The number of lymph nodes

Answer: (B)

Transport capacity in lymphatic drainage refers to the maximum amount of lymph the system can move through the lymphatic network over a given period when the pumping action of lymphatic vessels and external driving forces are functioning at their best. It reflects how much fluid the system can transport, not how fast it moves. The speed of lymph flow is a separate measure that describes velocity, which can change with pressure differences and vessel size but doesn’t define the overall capacity. Lymph production by tissue and the number of lymph nodes influence how much lymph appears in the system and the routes it can take, respectively, but they don’t determine the system’s transport capacity.