What is the correct order of flow through a lymph node?

The correct order of flow through a lymph node begins with the afferent lymphatic vessel, which carries lymph into the node. This flow continues through the subscapular sinus, where lymph first accumulates within the node's outer region. The lymph then moves into the trabecular sinus, which is located in the deeper regions of the node, facilitating further filtration and interaction with immune cells. Following this, lymph enters the medullary sinus, the innermost area where additional immune responses can occur. Finally, the lymph exits the lymph node through the efferent lymphatic vessel, continuing its journey through the lymphatic system.

Understanding the flow through a lymph node is essential for grasping how lymphatic fluid is filtered and how immune responses are activated, highlighting the node's role in the immune system. Each step in this pathway is critical for ensuring that pathogens and debris are properly managed, illustrating the sequential organization within the lymphatic system that supports effective immune function.