Chapter 13 - Lymphatic System and Body Defense

Question 1

Lymphatic System functions

Answer 1

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

Question 2

Immune System functions

Answer 2

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)

Question 3

Lymph

Answer 3

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

Question 4

spleen

Answer 4

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.

Question 5

Thymus gland

Answer 5

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

Question 6

T cells

Answer 6

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

Question 7

B cells (B lymphocytes)

Answer 7

A kind of lymphocyte that manufactures antibodies