Question 1

At the blood donation facility, you are completing an information form. The form asks about your health history and includes a question about whether you have ever had malaria or visited a country where malaria is endemic. Why is this information relevant?

Accepted Answer

A)   This is just one of many pathogens that blood is screened for. The information given by the donor saves the staff time in testing the blood.
B)   Recipients differ in their susceptibility to malaria; if you have had malaria, the staff will earmark your blood to speci?c kinds of recipients.
C)   Malarial parasites can persist in the liver, and, as a result, could be contaminating your blood and transferred to a recipient.
D)   If you are infected with malaria, you are probably also infected with HIV, and that would disqualify your donation.E) B) and C)
F) All of the above

Question 2

Which of these diseases would most likely be identiﬁed by viewing a stained blood smear in a light microscope?

Accepted Answer

A)   HIV
B)   Chagas disease
C)   Dengue fever
D)   Ebola hemorrhagic feverE) None of the above
F) A) and D)

Question 3

Yersinia pestis _______.

Accepted Answer

A)   was virulent historically but currently circulating strains are not virulent
B)   is usually transmitted by a ﬂea vector
C)   has deer as an endemic reservoir
D)   does not respond to antimicrobial drugsE) All of the above
F) C) and D)

Question 4

Which of the following statements regarding erhlichiosis is incorrect?

Accepted Answer

A)   Symptoms include fever, headache, and muscle pains.
B)   The disease vector is transmitted by Ixodes ticks.
C)   Treatment requires an extensive course of antibiotics, usually 3-6 weeks.
D)   The disease is diagnosed by PCR or indirect ﬂuorescent antibody tests.
E)   It often coinfects with Borrelia burgdorferi.F) All of the above
G) A) and B)

Question 5

Retroviruses have all of the following characteristics except _______.

Accepted Answer

A)   a DNA genome
B)   integration into the host genome
C)   reverse transcriptase
D)   glycoprotein spikes
E)   an envelopeF) A) and E)
G) None of the above

Question 6

Which of the following is not true of tularemia?

Accepted Answer

A)   Its symptoms include fever, swollen lymph nodes, ulcerative lesions, conjunctivitis, and pneumonia.
B)   The causative agent is a gram-positive bacterium.
C)   It is transmitted by arthropod vectors.
D)   It is sometimes called rabbit fever.
E)   It is a zoonosis.F) A) and B)
G) B) and E)

Question 7

Anthrax is not routinely diagnosed in the United States because _______.

Accepted Answer

A)   healthcare workers haven't been trained to detect it
B)   infections are usually asymptomatic
C)   infection is generally only seen in late-stage AIDS patients
D)   it is a rare infectionE) A) and D)
F) None of the above

Question 8

Which of the following statements regarding the Epstein-Barr virus is incorrect?

Accepted Answer

A)   An infection typically requires hospitalization for about a week.
B)   An infection results in sudden leukocytosis.
C)   The virus is transmitted by direct oral contact and saliva.
D)   The virus has a 30-50 day incubation period.
E)   Transmission has been documented through contaminated blood transfusions and organ transplants.F) C) and D)
G) B) and E)

Question 9

Epidemiologists classify diseases by their mortality rate (the percent of infected individuals who die from the disease)  and by their communicability (how easy it is to transmit the disease) . Which of the following diseases of the cardiovascular system is mismatched with a description of its properties?

Accepted Answer

A)   Plague; somewhat high mortality rate and low communicability
B)   AIDS; high mortality rate and low communicability
C)   Ebola; high mortality rate and high communicability
D)   Malaria; low mortality rate and high communicabilityE) A) and D)
F) A) and C)

Question 10

The reservoir for the Lassa fever virus is the ______.

Accepted Answer

A)   Anopheles mosquito
B)   multimammate rat
C)   fruit bat
D)   Aedes mosquito
E)   deer tickF) A) and D)
G) D) and E)

Question 11

Which type of hemorrhagic fever has been shown to respond to ribavirin?

Accepted Answer

A)   Lassa fever
B)   Rocky Mountain spotted fever
C)   Ebola
D)   MarburgE) None of the above
F) A) and C)

Question 12

Which of the following statements regarding Q fever is incorrect?

Accepted Answer

A)   The causative agent, Coxiella burnetii, is transmitted by lice.
B)   The disease is mild, and most cases go undetected.
C)   The causative agent, Coxiella burnetii, produces resistant endospore-like structures.
D)   Symptoms include fever, muscle aches, rash, and occasionally pneumonia.
E)   Humans can be infected from the airborne spread of particles from infected animals.F) A) and B)
G) A) and C)

Question 13

When bacteria ﬂourish and grow in the blood stream, the condition is termed ______.

Accepted Answer

A)   fungemia
B)   bactocarditis
C)   sepsis
D)   viremiaE) All of the above
F) A) and B)

Question 14

Erythema migrans, a bull's-eye rash, at the site of a tick bite is associated with ______.

Accepted Answer

A)   Lyme disease
B)   Rocky Mountain spotted fever
C)   Q fever
D)   plague
E)   ehrlichiosisF) None of the above
G) All of the above

Question 15

Hemorrhagic and nonhemorrhagic fever diseases have a common feature of a high fever. These categories of diseases are distinguished by _______.

Accepted Answer

A)   the pattern of the fever, whether it is constant or varies with time
B)   viral causes in hemorrhagic fevers and bacterial or protozoan causes in nonhemorrhagic fevers
C)   the viral load in the blood, speciﬁcally the viral titer
D)   the integrity of the capillary endothelium and its ability to contain the blood
E)   the overall mortality rate, as hemorrhagic fevers have a much higher mortality rateF) None of the above
G) C) and D)

Question 16

Under normal healthy circumstances, the lymphatic system ﬁlters any microorganisms present.

Accepted Answer

A) True 
 B)False

Question 17

The ﬁbrous sac that encloses the heart is the ______.

Accepted Answer

A)   myocardium
B)   epicardium
C)   ectocardium
D)   endocardium
E)   pericardiumF) All of the above
G) B) and E)

Question 18

The white-footed mouse, deer, and deer ticks are important to maintaining the zoonotic transmission cycle associated with ______.

Accepted Answer

A)   plague
B)   Rocky Mountain spotted fever
C)   babesiosis
D)   Lyme disease
E)   Q feverF) A) and E)
G) B) and E)

Question 19

The most important defense of the cardiovascular system against infection is ______.

Accepted Answer

A)   the blood-brain barrier
B)   lymph nodes
C)   lymphocytes in the blood
D)   feverE) None of the above
F) A) and C)

Question 20

Following unprotected sex with a guy you met at a party, you are now worried about what you might have been exposed to during this episode. Ten days later, you talk to your doctor about getting an HIV test. What is the doctor's response?

Accepted Answer

A)   The incidence of HIV infection in the United States is at an all-time low level, so transmission was not at all likely, especially after only a single possible exposure.
B)   The antibiotic that you have been taking for a urinary tract infection will also destroy HIV, so you don't have to worry about an infection.
C)   HIV infection can be latent and asymptomatic for years, so testing should be postponed until you exhibit symptoms of AIDS.
D)   It's too soon to detect the antibody produced by your immune system in response to HIV exposure, so a test will come back negative. Wait a few more weeks to be tested.E) B) and D)
F) A) and B)

Exam 20: Infectious Diseases Affecting the Cardiovascular and Lymphatic Systems

Erythema migrans, a bull's-eye rash, at the site of a tick bite is associated with ______.

Correct Answer
verified

The most important defense of the cardiovascular system against infection is ______.

Correct Answer
verified

Which of the following is not true of tularemia?

Correct Answer
verified

The ﬁbrous sac that encloses the heart is the ______.

Correct Answer
verified

At the blood donation facility, you are completing an information form. The form asks about your health history and includes a question about whether you have ever had malaria or visited a country where malaria is endemic. Why is this information relevant?

Correct Answer
verified

Which of the following statements regarding erhlichiosis is incorrect?

Correct Answer
verified

Retroviruses have all of the following characteristics except _______.

Correct Answer
verified

Which type of hemorrhagic fever has been shown to respond to ribavirin?

Correct Answer
verified

Hemorrhagic and nonhemorrhagic fever diseases have a common feature of a high fever. These categories of diseases are distinguished by _______.

Correct Answer
verified

Under normal healthy circumstances, the lymphatic system ﬁlters any microorganisms present.

Correct Answer
verified

Yersinia pestis _______.

Correct Answer
verified

When bacteria ﬂourish and grow in the blood stream, the condition is termed ______.

Correct Answer
verified

The reservoir for the Lassa fever virus is the ______.

Correct Answer
verified

Which of the following statements regarding the Epstein-Barr virus is incorrect?

Correct Answer
verified

Following unprotected sex with a guy you met at a party, you are now worried about what you might have been exposed to during this episode. Ten days later, you talk to your doctor about getting an HIV test. What is the doctor's response?

Correct Answer
verified

Which of the following statements regarding Q fever is incorrect?

Correct Answer
verified

Correct Answer
verified

The white-footed mouse, deer, and deer ticks are important to maintaining the zoonotic transmission cycle associated with ______.

Correct Answer
verified

Which of these diseases would most likely be identiﬁed by viewing a stained blood smear in a light microscope?

Correct Answer
verified

Anthrax is not routinely diagnosed in the United States because _______.

Correct Answer
verified

Exam 20: Infectious Diseases Affecting the Cardiovascular and Lymphatic Systems

Erythema migrans, a bull's-eye rash, at the site of a tick bite is associated with ______.

Correct AnswerverifiedShow Answer

The most important defense of the cardiovascular system against infection is ______.

Correct AnswerverifiedShow Answer

Which of the following is not true of tularemia?

Correct AnswerverifiedShow Answer

The ﬁbrous sac that encloses the heart is the ______.

Correct AnswerverifiedShow Answer

At the blood donation facility, you are completing an information form. The form asks about your health history and includes a question about whether you have ever had malaria or visited a country where malaria is endemic. Why is this information relevant?

Correct AnswerverifiedShow Answer

Which of the following statements regarding erhlichiosis is incorrect?

Correct AnswerverifiedShow Answer

Retroviruses have all of the following characteristics except _______.

Correct AnswerverifiedShow Answer

Which type of hemorrhagic fever has been shown to respond to ribavirin?

Correct AnswerverifiedShow Answer

Hemorrhagic and nonhemorrhagic fever diseases have a common feature of a high fever. These categories of diseases are distinguished by _______.

Correct AnswerverifiedShow Answer

Under normal healthy circumstances, the lymphatic system ﬁlters any microorganisms present.

Correct AnswerverifiedShow Answer

Yersinia pestis _______.

Correct AnswerverifiedShow Answer

When bacteria ﬂourish and grow in the blood stream, the condition is termed ______.

Correct AnswerverifiedShow Answer

The reservoir for the Lassa fever virus is the ______.

Correct AnswerverifiedShow Answer

Which of the following statements regarding the Epstein-Barr virus is incorrect?

Correct AnswerverifiedShow Answer

Following unprotected sex with a guy you met at a party, you are now worried about what you might have been exposed to during this episode. Ten days later, you talk to your doctor about getting an HIV test. What is the doctor's response?

Correct AnswerverifiedShow Answer

Which of the following statements regarding Q fever is incorrect?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The white-footed mouse, deer, and deer ticks are important to maintaining the zoonotic transmission cycle associated with ______.

Correct AnswerverifiedShow Answer

Which of these diseases would most likely be identiﬁed by viewing a stained blood smear in a light microscope?

Correct AnswerverifiedShow Answer

Anthrax is not routinely diagnosed in the United States because _______.

Correct AnswerverifiedShow Answer

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