Q: Which of the following equations best represents the threshold for AIDS diagnosis based on CD4 T cell count?

$$\text{CD4 T cells} \u003c 200 \, \text{cells}/\mu l$$

Q: Which equation best represents the relationship between the number of new malaria cases and the population at risk?

$$\text{Incidence} = \frac{\text{New Cases}}{\text{Population at Risk}}$$

Question 1

Which of the following best describes the function of the lymphatic system in relation to the cardiovascular system?

Accepted Answer

It serves as a major source of immune cells and fluids, screening body compartments for pathogens.

Question 2

A patient presents with chills, fever, and sweating at regular 48-hour intervals. Which Plasmodium species is most likely responsible for these symptoms?

Accepted Answer

P. vivax

Question 3

Which of the following equations best represents the threshold for AIDS diagnosis based on CD4 T cell count?

Accepted Answer

$$	ext{CD4 T cells} \u003c 200 \, 	ext{cells}/\mu l$$

Question 4

Which of the following is NOT a typical mode of HIV transmission?

Accepted Answer

Saliva exchange during casual contact

Question 5

A patient develops a bull’s-eye rash after a tick bite, followed by neurological symptoms. Which organism is most likely responsible?

Accepted Answer

Borrelia burgdorferi

Question 6

Which of the following best explains why malaria symptoms occur at regular intervals?

Accepted Answer

Synchronous rupture of red blood cells by merozoites.

Question 7

Which suffix is used to indicate the presence of bacteria in the blood?

Accepted Answer

-emia

Question 8

Which of the following is the primary vector for the transmission of plague?

Accepted Answer

Flea

Question 9

A patient presents with fever, chills, and a distinctive spotted rash that becomes necrotic. Which disease is most likely?

Accepted Answer

Rocky Mountain Spotted Fever

Question 10

Which equation best represents the relationship between the number of new malaria cases and the population at risk?

Accepted Answer

$$	ext{Incidence} = \frac{	ext{New Cases}}{	ext{Population at Risk}}$$

Question 11

Which of the following is a hallmark symptom of infectious mononucleosis?

Accepted Answer

Fatigue

Question 12

Which of the following is the causative agent of anthrax?

Accepted Answer

Bacillus anthracis

Question 13

Which of the following best describes septicemia?

Accepted Answer

Bacteria growing and flourishing in the blood

Question 14

Which of the following is a recommended prevention strategy for malaria?

Accepted Answer

Use of bed nets treated with insecticide

Question 15

Which of the following is a common misconception about HIV transmission?

Accepted Answer

HIV can be transmitted through saliva.

Question 16

Which of the following is a major defense mechanism of the cardiovascular system?

Accepted Answer

Blood-borne components of nonspecific and specific immunity, including phagocytosis

Question 17

A patient with untreated septicemic plague is most likely to experience which of the following outcomes?

Accepted Answer

Mortality rate of 100%

Question 18

Which of the following best explains why patients with infectious mononucleosis are advised not to engage in strenuous activity?

Accepted Answer

To avoid the risk of rupturing the spleen or liver

Question 19

Which of the following is the most effective treatment for Rocky Mountain Spotted Fever?

Accepted Answer

Antibiotic therapy

Question 20

Which of the following equations best represents the calculation of mortality rate for a disease?

Accepted Answer

$$	ext{Mortality Rate} = \frac{	ext{Number of Deaths}}{	ext{Total Population}}$$

Infectious Diseases Affecting the Cardiovascular and Lymphatic Systems

Study Guide - Practice Questions

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