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True/False Quiz
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Please answer all questions

1
The lymphatic system is an ancillary circulatory system of blood vessels that delivers nutrients and removes wastes from tissues.
A)True
B)False
2
Lymphatic vessels contain elastic fibers and valves.
A)True
B)False
3
The right lymphatic and thoracic ducts drain about an equal area of the body.
A)True
B)False
4
Bacteria cannot enter the blood from a wound in the skin as long as no bleeding is evidenced.
A)True
B)False
5
The function of the lymphatic system is to transport proteins and other particles to the circulation where they are identified by defense cells.
A)True
B)False
6
Breathing helps facilitate return of lymph by creating a positive pressure in the thoracic cavity.
A)True
B)False
7
Thymosin is a hormone that stimulates the development of thymocytes into all lymphocyte types.
A)True
B)False
8
T lymphocytes can be found in the bone marrow, spleen, blood, and tonsils as well as thymus gland.
A)True
B)False
9
The sinuses of the lymph nodes and spleen are cavities filled with blood.
A)True
B)False
10
The spleen always stops its hematopoietic activity at birth.
A)True
B)False
11
Macrophages are specialized lymphocytes that engulf foreign particles.
A)True
B)False
12
Tears contain lysozyme enzymes that can destroy bacteria.
A)True
B)False
13
Inflammation is a nonspecific defense mechanism that is caused by any cell damage.
A)True
B)False
14
Mucous membranes provide a barrier to infection mainly because of their phagocytic properties.
A)True
B)False
15
A macrophage could belong to the lymphatic and reticuloendothelial systems at the same time.
A)True
B)False
16
All phagocytes belong to the nonspecific mechanisms of defense.
A)True
B)False
17
The origin of the B cells is the bone marrow.
A)True
B)False
18
A clone is a group of cells with identical genetic properties.
A)True
B)False
19
The area designated the constant region of the immunoglobulin will bind to the antigen.
A)True
B)False
20
Immunoglobulin E can produce allergic or inflammatory reactions that are life threatening.
A)True
B)False
21
B cells usually require the presence of some activating factor before they can recognize an antigen.
A)True
B)False
22
Neutralizing antibodies cause antigens to lose their toxic properties.
A)True
B)False
23
T cells produce factors that stimulate the activity of other cells including B cells.
A)True
B)False
24
The delayed reaction allergy to a chemical is mediated by the B cell system.
A)True
B)False
25
The HIV viruses cause death from conditions such as pneumonia.
A)True
B)False
26
Immunosuppressive drugs can be used to suppress the histocompatibility complex reaction in a tissue organ or graft rejection.
A)True
B)False
27
SLE is an autoimmune disease that attacks body tissues because of a T cell activation.
A)True
B)False







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