The Lymphatic System

The lymphatic system is like your body's cleanup crew. It moves a fluid called lymph through your body. This fluid helps fight germs and removes waste that your cells do not need.

How It Works

Lymph is a clear fluid that flows through tiny tubes in your body. Along these tubes are small, bean-shaped lumps called lymph nodes. Lymph nodes filter out germs and bad cells.

When you are sick, your lymph nodes sometimes swell up. You might feel bumps on your neck or under your arms. That means your body is fighting an infection.

Why It Is Important

Without the lymphatic system, your body would fill up with extra fluid and waste. It also helps your immune system work better by carrying white blood cells to where they are needed.

The spleen and tonsils are also part of this system. They help your body catch and destroy germs before they make you sick.

Fun Facts

• You have about 600 lymph nodes spread throughout your body.
• The lymphatic system does not have a pump like the heart, so movement and exercise help keep lymph flowing.
• Your tonsils are part of the lymphatic system and help catch germs you breathe in.

Did You Know?

Your body makes about three liters of lymph fluid every single day!