AEMCA Practice Exam

How many afferent vessels connect to a lymph node?

1. 2

2. 4

3. 6

4. 8

The correct answer is: 4

Lymph nodes typically have multiple afferent vessels that carry lymph fluid from peripheral tissues to the node. Generally, it is understood that lymph nodes have multiple afferent lymphatic vessels, often around three to four, allowing for efficient drainage and immune response initiation. While the maximum can vary, the general estimate in many anatomical texts favors around four afferent vessels connecting to a lymph node. This design maximizes the lymphatic system's ability to filter and monitor lymph for pathogens and foreign substances. Knowing this aids in the understanding of the lymphatic system's role in immunity and fluid regulation in the body.