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Exam 13: Host Defenses II: Specific Immunity and Immunization

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Question 1

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In addition to dendritic cells and macrophages,B cells can also act as antigen-presenting cells.  This occurs when ________.

A) the antigen is a molecule with a simple,repeating structure and evokes an immune response as a T-cell-independent antigen
B) the B cell engulfs the antigen and presents it to the T helper cell
C) the B cell engulfs the antigen and presents it to the T cytotoxic cell
D) the antigen binds to the B cell and after processing,it is presented to the dendritic cells and macrophages

E) A) and D)
F) C) and D)

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Question 2

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Class I MHC genes code for ________.

A) certain secreted complement components
B) self receptors recognized by T lymphocytes
C) all HLA antigens
D) receptors located primarily on macrophages and B cells
E) All of the choices are correct.

F) B) and E)
G) D) and E)

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Question 3

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An RN working in a general medical-surgical unit is caring for a 57-year-old female with a bladder infection. Two weeks prior to hospitalization, the patient was experiencing slight burning upon urination. She self-treated by increasing her intake of fluids, but her symptoms continued to worsen. One week later, she developed generalized abdominal pain and a fever. She presented to the hospital when the pain became unbearable and fever reached 104°F. She was admitted to the medical-surgical unit and started on multiple IV antibiotics with concern that she could be developing a kidney infection. -Knowing that the causative organism for this patient's urinary tract infection,E.coli,has a lipopolysaccharide cell wall,which cells are being activated by this infection?

The molecular fragment on an antigen molecule that a lymphocyte recognizes and responds to is called a(n) ________.

A 6-year-old male is brought to his pediatrician's office with chickenpox. He has had symptoms for one week, and his mother is concerned about the patient's 8-year-old sister because she had a long, painful chickenpox infection 2 years prior. Of note, the patient was not vaccinated against chickenpox because his parents did not think it was a serious enough virus to warrant the pain of the injection. -After his recovery from chickenpox,which lymphocytes will keep this patient from becoming infected again? 

Clonal selection can be stimulated by foreign or self antigens.

Which of the following is not a target for TC cells?

Which of the statements below represents the correct order in the development of an immune response?

An RN working in a general medical-surgical unit is caring for a 57-year-old female with a bladder infection. Two weeks prior to hospitalization, the patient was experiencing slight burning upon urination. She self-treated by increasing her intake of fluids, but her symptoms continued to worsen. One week later, she developed generalized abdominal pain and a fever. She presented to the hospital when the pain became unbearable and fever reached 104°F. She was admitted to the medical-surgical unit and started on multiple IV antibiotics with concern that she could be developing a kidney infection. -Which part of the IgG molecule will bind with the E.coli antigen?

Antibody molecules circulate in lymph,blood,and tissue fluids.

Gamma globulin can be given as immunotherapy to confer artificial passive immunity.

Helper T cells ________.

Antigens that elicit allergic reactions are called ________.

Killed or inactivated vaccines are prepared by ________.

An example of natural active immunity would be ________.

A 2-week-old infant is brought to a family practice office for a scheduled visit. The parents appear anxious, as this is their first child. They express multiple concerns to the nurse about their son's sleep patterns, feeding, and crying. The RN provides empathetic listening and education to calm their fears, and they are receptive to the teaching. When the RN discusses vaccination with the parents, they refuse to vaccinate their son because they have heard vaccines can cause autism in children. -Which of the following statements is not true concerning vaccines?

Class II MHC genes code for ________.

Human B lymphocytes mature in an intestinal region called the bursa.

Cytotoxic T cells ________.

A 6-year-old male is brought to his pediatrician's office with chickenpox. He has had symptoms for one week, and his mother is concerned about the patient's 8-year-old sister because she had a long, painful chickenpox infection 2 years prior. Of note, the patient was not vaccinated against chickenpox because his parents did not think it was a serious enough virus to warrant the pain of the injection. -Which of the following explanations correctly represents how this patient could have been protected from chickenpox infection?