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Exam 17: Immunity and Infection

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Question 61

Multiple Choice

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The ability of memory lymphocytes to remember previous infections is known as

A) acquired immunity.
B) active immunity.
C) future immunity.
D) passive immunity.

E) B) and C)
F) C) and D)

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Question 62

Multiple Choice

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The release of histamines does not cause ______ in the affected area.

A) redness
B) swelling
C) infection
D) heat

E) All of the above
F) A) and B)

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Question 63

Multiple Choice

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Which of the following is not considered a pathogen?

Lymphocytes generated during an initial infection that circulate in the body for years and quickly destroy that infection if it ever appears again are called ______ cells.

Define "pathogen" and trace the chain of infection through its various steps.Give at least three strategies for breaking the chain of infection.

Define "allergy" and briefly explain how an allergic response occurs.List at least three common allergens and two strategies for dealing with allergies.

Which of the following is not considered a common allergen?

An infection that travels throughout the body is called

Multiple sclerosis is an example of an autoimmune disease.

The two main types of lymphocytes are T cells and B cells.

Swollen lymph nodes are an indication of

Pathogens can enter the body through penetration of the skin,by inhalation,or by ingestion.

T cells and B cells are the main types of

A person who is exposed to a disease and is subsequently injected with antibodies produced by others has been given

An organism that causes disease is a(n)

Discuss the concept of emerging infectious diseases.Identify at least three specific emerging infections and three factors contributing to disease emergence worldwide.

Vaccines confer ______ immunity.

Mycoplasmas are a common cause of pneumonia among college students.

Vessels and organs that pick up excess fluids,filter out disease-causing organisms and other waste products,and return cleansed fluid to general circulation belong to the ______ system.

Rabies is most often transmitted by