The Lymphatic & Immune System

Production, maintenance, and distribution of lymphocytes; transports excess fluid to the bloodstream.

Special lymphatic capillaries in the small intestine that absorb digested fats.

Tiny tubes forming lymphatic pathways; merge into larger vessels.

Drain lymph and join collecting ducts like the thoracic duct.

The larger and longer lymphatic duct, drains lower limbs and left side of body.

Plasma-like fluid formed from interstitial fluid; becomes lymph in capillaries.

Located along lymphatic pathways, contain lymphocytes and macrophages for immune defense.

Indented region of lymph node where blood vessels and nerves attach.

Protective membrane that encloses and subdivides the lymph node.

Functional units of a lymph node; dense arrangements of lymphoid tissue.

Lymphatic organs protecting against bacteria introduced through nose and mouth.

Located on each side of the posterior opening of the oral cavity

Spaces inside a node comprising complex channels through which lymph moves

In the thorax, produces lymphocytes and plays a role in early immunity.

Largest lymphatic organ; resembles a large, subdivided lymph node.

Splenic nodules containing many lymphocytes, found throughout spleen

Immune responses that defends against many different types of pathogens, present at birth.

Prevent microorganisms from approaching, entering, or spreading through physical barriers.

Enzymes and chemical substances in body fluids; pepsin, tears, lysozyme, salt.

Defense against specific toxins and pathogens.