The Lymphatic System: True/false

Front 1

The tissue lining of the lymphatic capillaries consists of "epithelium."

Back 1

False, endothelium

Front 2

The largest lymphatic vessel of the body is the "vena cava."

Back 2

False, thoracic duct

Front 3

Before entering its contents into the cardiovascular system, the right lymphatic duct unites with the "right subclavian vein."

Back 3

True

Front 4

The lymphatic system is a "one-way" system for fluid.

Back 4

True

Front 5

The two major cells of the lymph nodes are the T-lymphocytes and "P-lymphocytes."

Back 5

False, B-lymphocytes

Front 6

Those lymph vessels entering the lymph nodes are known as "efferent" lymph vessels.

Back 6

False, afferent

Front 7

Within the lymph nodes, lymphocytes are arranged densely within the outer portion of the node called the "medulla."

Back 7

False, cortex

Front 8

The lymph nodes serve the body as the site for the production of "antigens."

Back 8

False, antibodies

Front 9

The "inguinal" lymph nodes are the lymph nodes found in the neck.

Back 9

False, cervical

Front 10

Lymphoid tissue found in the wall of the intestinal tract is called "palatine tonsils."

Back 10

False, Peyer's patches

Front 11

The thymus is the body organ in which "B-lymphocytes" are produced.

Back 11

False, T-lymphocytes

Front 12

The spleen is located in the upper portion of the abdominal cavity, just "anterior" to the diaphragm.

Back 12

False, posterior

Front 13

The fluid derived from blood traveling through the lymphatic vessels is known as "lymph."

Back 13

True

Front 14

Lymph sometimes has a milky consistency because of the presence of "proteins."

Back 14

False, fats

Front 15

An accumulation of interstitial fluid in the spaces between the cells causes a condition known as "edema."

Back 15

True

Front 16

The immune system begins to develop during the third month after "birth."

Back 16

False, conception

Front 17

The receptor sites positioned on the cell membrane of B-lymphocytes are "antigen" molecules.

Back 17

False, antibody

Front 18

An antigen molecule is usually a large protein or "nucleic acid" molecule.

Back 18

False, polysaccharide

Front 19

Antigens are chemical molecules interpreted by the body as being "self."

Back 19

False, nonself

Front 20

The immune process begins with phagocytosis of foreign organisms by body cells such as "lymphocytes."

Back 20

False, macrophages

Front 21

The immunity imparted to the body by T-lymphocytes is known as "cell-mediated" immunity.

Back 21

True

Front 22

After stimulation by antigens, B-lymphocytes become "phagocytic" cells, which are responsible for antibody production.

Back 22

False, plasma

Front 23

To prevent the immune process from becoming overactive, the body uses its "helper" T-lymphocytes to slow down the process.

Back 23

False, suppresser

Front 24

All antibody molecules are composed of "carbohydrate."

Back 24

False, protein

Front 25

The immune system has the capacity to produce a "dozen" different kinds of antibody.

Back 25

False, million