Question 1

Which of the following statements regarding immunoglobulins is TRUE?

Accepted Answer

A)  They consist of a unique sequence of amino acids. 
B)  They are produced in the red bone marrow. 
C)  They are attached to mucosal membranes at entry points into the body. 
D)  IgA binds to allergens. 
A)  They consist of a unique sequence of amino acids. 
B)  They are produced in the red bone marrow. 
C)  They are attached to mucosal membranes at entry points into the body. 
D)  IgA binds to allergens. A

Question 2

Which of the following is an effect of cytokines? They:

Accepted Answer

A)  activate and stimulate proliferation of B and T lymphocytes 
B)  destroy antigens quickly 
C)  increase the rate of mitosis in tumors 
D)  cause immediate pain 
A)  activate and stimulate proliferation of B and T lymphocytes 
B)  destroy antigens quickly 
C)  increase the rate of mitosis in tumors 
D)  cause immediate pain A

Question 3

Distinguishing clinical features of systemic lupus erythematosus include:

Accepted Answer

A)  inflammation in multiple organs 
B)  lack of a specific diagnostic blood test 
C)  acute onset,nonprogressive course 
D)  typical skin rash on the chest and back 
A)  inflammation in multiple organs 
B)  lack of a specific diagnostic blood test 
C)  acute onset,nonprogressive course 
D)  typical skin rash on the chest and back A

Question 4

Which statement applies to contact dermatitis?

Accepted Answer

A)  It occurs when IgE antibodies on the skin react with the causative substance. 
B)  It may result from ingested foods. 
C)  Urticaria (hives)gradually spread over the body. 
D)  A type IV reaction occurs in specific areas. 
A)  It occurs when IgE antibodies on the skin react with the causative substance. 
B)  It may result from ingested foods. 
C)  Urticaria (hives)gradually spread over the body. 
D)  A type IV reaction occurs in specific areas.

Question 5

Which of the following causes anaphylaxis?

Accepted Answer

A)  a severe,systemic allergic reaction 
B)  type III hypersensitivity 
C)  cell-mediated hypersensitivity 
D)  immune complex deposits in many tissues 
A)  a severe,systemic allergic reaction 
B)  type III hypersensitivity 
C)  cell-mediated hypersensitivity 
D)  immune complex deposits in many tissues

Question 6

What does seroconversion mean in relation to HIV and AIDS?

Accepted Answer

A)  The virus has been identified in the blood and body fluids. 
B)  Antibodies for HIV have been identified in the blood. 
C)  HIV was found in lymphocytes. 
D)  Active infection has developed in the patient. 
A)  The virus has been identified in the blood and body fluids. 
B)  Antibodies for HIV have been identified in the blood. 
C)  HIV was found in lymphocytes. 
D)  Active infection has developed in the patient.

Question 7

Humoral immunity is mediated by:

Accepted Answer

A)  natural killer cells 
B)  T-lymphocytes (T cells) 
C)  B-lymphocytes (B cells) 
D)  neutrophils 
A)  natural killer cells 
B)  T-lymphocytes (T cells) 
C)  B-lymphocytes (B cells) 
D)  neutrophils

Question 8

Which statement is TRUE regarding infants born to HIV infected mothers?

Accepted Answer

A)  Infants usually test negative for HIV after birth. 
B)  There is little risk of infected mothers passing the virus to their infants during delivery. 
C)  Breast milk does not contain HIV or antibodies. 
D)  Infants test positive for HIV due to presence of maternal antibodies. 
A)  Infants usually test negative for HIV after birth. 
B)  There is little risk of infected mothers passing the virus to their infants during delivery. 
C)  Breast milk does not contain HIV or antibodies. 
D)  Infants test positive for HIV due to presence of maternal antibodies.

Question 9

In cases of HIV infection,the "window period" refers to the time between:

Accepted Answer

A)  entry of the virus into the blood and the initial manifestations 
B)  entry of the virus into the body and the appearance of antibodies in the blood 
C)  entry of the virus into the body and a significant drop in CD4 T-helper lymphocyte count 
D)  diagnosis of "HIV positive" and diagnosis of "AIDS" 
A)  entry of the virus into the blood and the initial manifestations 
B)  entry of the virus into the body and the appearance of antibodies in the blood 
C)  entry of the virus into the body and a significant drop in CD4 T-helper lymphocyte count 
D)  diagnosis of "HIV positive" and diagnosis of "AIDS"

Question 10

Which of the following is NOT a cause of immunodeficiency?

Accepted Answer

A)  hypoplasia of the thymus 
B)  delayed hypersensitivity 
C)  immunosuppressive drugs 
D)  atrophy of the lymph nodes 
A)  hypoplasia of the thymus 
B)  delayed hypersensitivity 
C)  immunosuppressive drugs 
D)  atrophy of the lymph nodes

Question 11

Which of the following are the target cells for HIV?

Accepted Answer

A)  helper T-lymphocytes (CD4 lymphocytes) 
B)  B-lymphocytes 
C)  natural killer cells 
D)  macrophages 
A)  helper T-lymphocytes (CD4 lymphocytes) 
B)  B-lymphocytes 
C)  natural killer cells 
D)  macrophages

Question 12

Host-versus-graft disease refers to:

Accepted Answer

A)  hyperacute rejection of tissue 
B)  T-cells in grafted tissue attacking host cells 
C)  infection resulting from immunosuppression therapy 
D)  transplant rejection by the recipient's immune system 
A)  hyperacute rejection of tissue 
B)  T-cells in grafted tissue attacking host cells 
C)  infection resulting from immunosuppression therapy 
D)  transplant rejection by the recipient's immune system

Question 13

Which type of immunity is provided by a vaccination?

Accepted Answer

A)  active natural 
B)  active artificial 
C)  passive natural 
D)  passive artificial 
A)  active natural 
B)  active artificial 
C)  passive natural 
D)  passive artificial

Question 14

Which of the following complications does NOT occur frequently in AIDS patients?

Accepted Answer

A)  Kaposi's sarcoma 
B)  wasting syndrome 
C)  lymphoma 
D)  polyarthritis 
A)  Kaposi's sarcoma 
B)  wasting syndrome 
C)  lymphoma 
D)  polyarthritis

Question 15

Why is anaphylaxis considered a critical situation?

Accepted Answer

A)  The heart rate is irregular. 
B)  Carbon dioxide levels in the body are greatly increased. 
C)  Bronchoconstriction and systemic vasodilation develop rapidly. 
D)  Manifestations are not obvious in the initial stages. 
A)  The heart rate is irregular. 
B)  Carbon dioxide levels in the body are greatly increased. 
C)  Bronchoconstriction and systemic vasodilation develop rapidly. 
D)  Manifestations are not obvious in the initial stages.

Question 16

Which of the following statements does NOT apply to MHC proteins or molecules?

Accepted Answer

A)  They are genes on chromosome 6. 
B)  All members of a family have identical MHCs. 
C)  They alert the immune system to virus-infected cells. 
D)  A close match is essential for successful tissue transplants. 
A)  They are genes on chromosome 6. 
B)  All members of a family have identical MHCs. 
C)  They alert the immune system to virus-infected cells. 
D)  A close match is essential for successful tissue transplants.

Question 17

CD4-positive helper T-cells function by:

Accepted Answer

A)  direct cytotoxic action 
B)  facilitating all immune system activity 
C)  production of immunoglobulins 
D)  inactivating allergens 
A)  direct cytotoxic action 
B)  facilitating all immune system activity 
C)  production of immunoglobulins 
D)  inactivating allergens

Question 18

HIV infection impairs:

Accepted Answer

A)  humoral immunity 
B)  cell-mediated immunity 
C)  both humoral and cell-mediated immunity 
D)  neither type of immunity 
A)  humoral immunity 
B)  cell-mediated immunity 
C)  both humoral and cell-mediated immunity 
D)  neither type of immunity

Question 19

The most common cause of death in AIDS patients is:

Accepted Answer

A)  HIV encephalopathy 
B)  tuberculosis 
C)  Pneumocystis carinii pneumonia 
D)  Candida infection 
A)  HIV encephalopathy 
B)  tuberculosis 
C)  Pneumocystis carinii pneumonia 
D)  Candida infection

Question 20

Systemic lupus erythematosus is caused by:

Accepted Answer

A)  a chronic allergic condition 
B)  development of an immune-deficient state 
C)  a deficiency of T-lymphocytes 
D)  immune complex deposits of antinuclear antibodies 
A)  a chronic allergic condition 
B)  development of an immune-deficient state 
C)  a deficiency of T-lymphocytes 
D)  immune complex deposits of antinuclear antibodies

Exam 3: Immunity and Abnormal Responses

Which of the following statements regarding immunoglobulins is TRUE?

Which of the following is an effect of cytokines? They:

Distinguishing clinical features of systemic lupus erythematosus include:

Which statement applies to contact dermatitis?

Which of the following causes anaphylaxis?

What does seroconversion mean in relation to HIV and AIDS?

Humoral immunity is mediated by:

Which statement is TRUE regarding infants born to HIV infected mothers?

In cases of HIV infection,the "window period" refers to the time between:

Which of the following is NOT a cause of immunodeficiency?

Which of the following are the target cells for HIV?

Host-versus-graft disease refers to:

Which type of immunity is provided by a vaccination?

Which of the following complications does NOT occur frequently in AIDS patients?

Why is anaphylaxis considered a critical situation?

Which of the following statements does NOT apply to MHC proteins or molecules?

CD4-positive helper T-cells function by:

HIV infection impairs:

The most common cause of death in AIDS patients is:

Systemic lupus erythematosus is caused by:

Introduction to Pathophysiology

Inflammation and Healing

Infection

Neoplasms

Fluid,electrolyte and Acid-Base Imbalances

Congenital and Genetic Disorders

Diseases Associated With Adolescence

Potential Complications of Pregnancy

Aging and Disease Processes

Effects of Immobility

The Influence of Stress

Pain

Substance Abuse

Environmental Hazards

Introduction to Basic Pharmacology and Selected Therapies

Blood and Lymphatic Disorders

Cardiovascular Disorders

Respiratory Disorders

Digestive System Disorders

Urinary System Disorders

Acute Neurological Disorders

Chronic Neurologic Disorders

Disorders of the Eye and Ear

Endocrine Disorders

Musculoskeletal Disorders

Skin Disorders

Reproductive System Disorders

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