Chapter 13 - Lymphatic System and Body Defense Flashcards Preview

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Flashcards in Chapter 13 - Lymphatic System and Body Defense Deck (7):
1

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

2

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)

3

Lymph

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

4

spleen

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.

5

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)

6

T cells

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

7

B cells (B lymphocytes)

A kind of lymphocyte that manufactures antibodies