Afferent vessels perform which function?

• A. Circulate blood
• B. Take filtered lymph away from the node
• C. Bring lymph to the node
• D. Produce lymph

Answer: (C)

Afferent lymphatic vessels are the flow path that brings lymph toward a lymph node, enabling immune surveillance. They deliver lymph from peripheral tissues into the node so staff immune cells can screen for pathogens or foreign material. Inside the node, lymph flows through the subcapsular and medullary sinuses where it’s filtered and immune responses can be initiated. From there, lymph exits via efferent vessels. So the essential function is to bring lymph to the node. They do not circulate blood, they do not take filtered lymph away (that’s the job of efferent vessels), and they do not produce lymph (lymph is formed from tissue fluid and is transported by the lymphatics).