Chapter 7: The Lymphatic and Immune Systems

Lymph

Fluid inside lymphatic vessels

Thoracic duct

empties lymph into the left subclavian vein

Thymus

lymphatic tissue where T lymphocytes mature and learn to tell “self” from “nonself”

Spleen

cleanses the blood of cellular debris and bacteria while resident lymphocytes respond to the presence of antigens

Inguinal lymph nodes

cleanse the lymph and alert the immune system to pathogens

interstitial fluid

mostly water but contains solutes (nutrients, electrolytes and oxygen)

Primary lymphatic organs

red bone marrow and the thymus

Secondary lymphatic organs

lymph nodes and spleen and tonsils

B cells mature in the __, T cells mature in the _

Bone marrow; thymus

The spleen

filters blood

Peyer’s patches

located in the intestinal wall and in tissues within the appendix and encounter pathogens that enter the body by the way of the digestive tract

Immunity

the capablity of killing or removing foreign substances, pathogens, and cancer cells from the body

Macrophage

Large phagocytic cell derived from a monocyte that ingests microbes and debris.