Group of cells and chemicals that travel in lymphatic vessels, and organs & glands that synthesize them. Defends the body against disease.

Bacteria and cellular debris from the lymph

a tissue response to injury or infection

response by the body against specific pathogens,
their toxins, or their metabolic products

igG, igA, and igM

Lymphatic capillaries are tiny, closed-ended tubes that
extend into interstitial spaces, paralleling the blood
capillaries

lymphocytes and macrophages

to stop the spread of pathogens and infection

lymphocytes and macrophages

igG is found in tissue fluid and plasma, IgA is found in exocrine gland secretions, and gM is found in plasma

Larger lymphatic vessels pass through organs. contain both lymphocytes and macrophages; they filter the lymph as it flows through them, removing many pathogens

attack viruses, bacteria and parasitic cells that
enter a lymph node

redness, swelling, heat, and pain

molecules that that can elicit an immune
response

by agglutination, precipitation, or neutralization
of antigens

tissue fluid that has entered a lymphatic capillary;
lymph formation depends on tissue fluid formation.

engulf and destroy foreign particles, debris,
and damaged cells

Dialation of blood vessels, invasion of white blood cells, and increase of blood vessels.

“nonself” molecules, which are usually large and complex foreign molecules

results in opsonization, chemotaxis, inflammation, agglutination, neutralization, alteration, or lysis of antigens or antigen-bearing cells

soft, bi-lobed organ located behind the sternum, above the heart. It secretes hormones called thymosins, which influence the maturation of T lymphocytes

lymphocyte production

secrete chemicals that produce a sac around the
area to wall off infection

Third line of defense

gamma globulin