Hole's Essentials of Human Anatomy & Physiology, 12th Edition (Shier)

Chapter 14: Lymphatic System and Immunity

Post-Test Questions

1
The thymus is located in the
A)posterior neck
B)thorax behind the sternum
C)upper abdomen
D)ileum of the small intestine
2
Which of the following white blood cells mature in the thymus?
A)eosinophils
B)T lymphocytes
C)B lymphocytes
D)basophils
3
The largest of the organs of the adult lymphatic system is the
A)collection of lymph nodes
B)spleen
C)red bone marrow
D)thymus
4
All of the following are examples of innate (non-specific) defenses except
A)running a low-grade fever
B)bacteria killed by enzymes or acid
C)complement that stimulates inflammation
D)lymphocytes detecting the chickenpox virus
5
The upper skin layer is an example of which of the following body defenses against infection?
A)immunity
B)inflammation
C)mechanical barriers
D)phagocytosis
6
Which of the following characteristics of the stomach enable it to act as a chemical barrier?
A)low pH
B)mucous lining
C)thick walls
D)secretion of the enzyme lysozyme
7
Which of the following is not a major symptom of inflammation?
A)pain
B)localized redness
C)swelling and heat
D)fever
8
What is chemotaxis?
A)The activation of T cells
B)The attraction of macrophages into the area
C)a cab for chemicals
D)the presentation of antigens by macrophages
9
T cells and B cells are able to recognize foreign proteins because
A)of changes in their nucleus
B)their cytoplasm contains specialized proteins
C)of changes in permeability of the cell membrane
D)of receptor molecules on T cells and B cells which fit the molecules of antigens
10
The function of the memory B and T cells is to
A)provide a chemical barrier to pathogens.
B)provide the secondary immune response.
C)present antigens to the macrophages
D)induce chemotaxis
11
Activated B-lymphocytes respond to foreign protein by
A)phagocytosis
B)secreting and synthesizing cytokines
C)producing antigens
D)producing antibodies or immunoglobulins
12
The immunoglobulin implicated in allergic responses is
A)IgA
B)IgM
C)IgD
D)IgE
13
Which of the following does not occur when antibodies directly attack foreign proteins?
A)agglutination (clumping) of the antigens
B)precipitation of the antigens
C)neutralization of the antigen
D)the formation of helper B cells
14
Which of the following cannot function as an antigen-presenting cell?
A)macrophages
B)red blood cells
C)B cells
D)monocytes
15
The main cell attacked and harmed by the HIV virus is the
A)neutrophil
B)helper T cell
C)B cell
D)monocyte
16
The type of allergic response that occurs soon after contact with an allergen is a(n)
A)collagen response
B)delayed reaction allergy
C)inflammatory response
D)immediate reaction allergy
17
Tissue rejection following organ transplantation resembles
A)a B cell response to an antigen
B)destruction of tissue due to large amounts of histamine
C)a cell-mediated response to a foreign antigen
D)inflammatory responses
18
An example of an autoimmune disease is
A)cystic fibrosis
B)rheumatoid arthritis
C)septicemia
D)leukemia
19
The smallest of the lymphatic vessels are closed-ended tubes called lymphatic capillaries.
A)True
B)False
20
The skin is poorly supplied with lymphatic capillaries.
A)True
B)False
21
Lymph flows only in one direction, toward the heart.
A)True
B)False
22
Edema can occur in tissue near damaged or surgically removed lymphatic tissue.
A)True
B)False
23
T cells have the ability to recognize antigens as foreign, without the help of other cells.
A)True
B)False
24
The thymus enlarges throughout childhood and reaches its maximum size at 40-50 years of age.
A)True
B)False
25
The fact that a given disease may affect humans but not their cats and dogs is an example of species resistance.
A)True
B)False
26
Interferon, a hormone-like peptide produced by lymphocytes and fibroblasts, is an example of a chemical barrier to infection.
A)True
B)False
27
Inflammation is solely a response to infection.
A)True
B)False
28
Phagocytic cells can leave the bloodstream by squeezing between the cells of blood vessel walls in the process of diapedesis.
A)True
B)False
29
Immunity is resistance to particular pathogens or their toxins or metabolic by-products.
A)True
B)False
30
A hapten is a very small molecule that can stimulate an immune response by itself.
A)True
B)False
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