What is the Lymphatic System? A Simple Guide to How it Works

Basic Anatomy

The lymphatic system is part of the circulatory system. Its primary functions are to transport lymphatic fluid through the lymphatic channels, filter lymph fluid through the nodes, and return it to the bloodstream for later elimination. Nearly all body systems and organs have lymphatic channels to collect byproducts for elimination. Interestingly enough though, lymph in the liver and intestines make up about 80% of the lymph fluid in the body!¹

Components of the Lymphatic System

• • Lymph fluid
• • Lymphatic vessels and plexuses
• • Lymph nodes
• • Lymphatic cells
• • Lymphoid organic

Immune System Support Functions

The lymphatic system also supports the immune system.¹ You have lymph nodes all throughout your body, and you can think of these as checkpoints where lymph fluid is filtered. Within the lymph nodes, immune cells help to identify and respond as needed. As the lymph fluid circulates, it carries immune cells to areas where they’re needed and moves waste or foreign particles away from the tissues.

Lifestyle Tips for Lymphatic Flow

Unlike the heart, the lymphatic system does not have a pump. This system relies on movement and muscle contraction to keep lymph flowing. Therefore, living an active life and moving your body regularly is key to stimulating the lymphatic system! Try simple movements, like walking, stretching, or gentle bouncing on a rebounder. Lymph is also mostly made of fluid, so staying hydrated keeps it moving.² Other things, like deep breathing and gentle massage help the lymphatic system, too.³