Lymph

Definition

Lymph is a clear fluid that circulates through the lymphatic system, carrying cells that help fight infections and other diseases. It consists of white blood cells, especially lymphocytes, which are crucial for adaptive immunity.

5 Must Know Facts For Your Next Test

1. Lymph originates from interstitial fluid that surrounds body tissues.
2. It is transported through lymphatic vessels and filtered by lymph nodes.
3. Lymph contains lymphocytes, which are vital for adaptive immune responses.
4. The movement of lymph is largely driven by muscle contractions and valves within the lymphatic vessels.
5. Lymph nodes act as checkpoints where pathogens are detected and an immune response can be initiated.

Review Questions

• What is the main function of lymph in the body's immune system?
• How is lymph different from blood plasma?
• Describe how lymph travels through the body.

Related terms

Lymphocytes: A type of white blood cell found in lymph that plays a key role in adaptive immunity.

Lymph Nodes: Small structures that filter harmful substances from the lymph and contain immune cells to fight infections.

Lymphatic Vessels: A network of tubes that transport lymph throughout the body.