Chapter 13 - Lymphatic System and Body Defense Flashcards Preview

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Flashcards in Chapter 13 - Lymphatic System and Body Defense Deck (7):

Lymphatic System functions

1) reduces tissue edema by removing fluid from capillary beds; 2) returns proteins from the fluids to the blood; 3) traps and filters cellular debris, like cancer cells and microbes, with the help of macrophages; 4) circulates lymphocytes to assist with the immune response; 5) moves fats from GI tract to blood


Immune System functions

1) protects body against foreign body invasion; 2) in normal function, it coordinates activities in the blood, body tissues, and the lymphatic system to protect the body from foreign body invasion; 3) fights off infections and protects against future infections by producing a variety of immune responses; 4) produces antibodies (immunoglobulins)



fluid that contains white blood cells and other substances that flows in the lymphatic vessels



largest lymphatic organ; functions: filter foreign material from blood, store blood, remove damaged or old RBCs, and activate lymphocytes that destroy some of the foreign substances filtered from the blood.


Thymus gland

site of maturation for T and B cells (T lymphocytes and B lymphocytes); thymosin (aids in distribution of thymocytes (T lymphocytes) and lymphocytes)


T cells

specialized white blood cells that receive markers in the thymus, are responsible for cellular immunity, and assist with humoral immunity


B cells (B lymphocytes)

A kind of lymphocyte that manufactures antibodies