2012 I&I exam Flashcards Preview

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Flashcards in 2012 I&I exam Deck (31)
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1
Q

What type of cells is the most common in the cortex of the Lymph Node?

a. Macrophage
b. T lymphocyte
c. B Lymphocyte

A

c. B Lymphocyte

2
Q

Which of the following best describes the thymus?

a. It is active during fetal life
b. It remains active throughout life
c. It attains functional maturity at puberty
d. It is most functional during the fifth decade of life

A

a. It is active during fetal life

3
Q

What can you find in the white pulp?

a. fibro-elastic dense irregular tissue
b. Germinal Centers
c. Hassall’s corpuscles

A

b. Germinal Centers

4
Q

Which TWO of the following epithelioreticular cells contribute to the maturation of T Cells?

a. type I epithelioreticular cells
b. type II epithelioreticular cells
c. type IV epithelioreticular cells
d. type V epithelioreticular cells

A

b. type II epithelioreticular cells
&
d. type V epithelioreticular cells

5
Q

What type of cells line the splenic sinuses?

a. round cells
b. elongated cells
c. star-shaped cells

A

b. elongated cells

6
Q

Khalid, a 20-year old college student, is a sensation seeker and engages in physical and social challenges associated with health-related behaviors that may put him at risk of acquiring an STD. What is the characteristic associated with Khalid’s behavior?
A. He underestimates the risk involved
B. Has siblings with a “sensation seeker” personality
C. He’s an idiot

A

A. He underestimates the risk involved

7
Q

An infection has a reproductive rate of 1. Which of the following is true?

a. the infection is epidemic
b. the infection is pandemic
c. the infection is endemic

A

c. the infection is endemic

8
Q

A child presented with recurrent infections. He suffered from eczema and had bloody diarrhea. A blood count revealed thrombocytopenia. What immune defect is this?

a. Hyper IgM syndrome
b. Wiskott Aldrich syndrome
c. Catch 22 anomaly
d. Chédiak Higashi syndrome

A

b. Wiskott Aldrich syndrome

9
Q

Intervillositis with pigmentation in Macrophage of Fibrin deposit and prominent cytotrophoblast. What organism causes this condition?

A

Plasmodium intrauterine

(Plasmodium intrauterine infection is characterized by a large number of macrophages and histiocytes between the villi and the production of the malaria pigment called hemozoin, which prevents the toxic effects of heme)

10
Q

During lab diagnosis, the result was Intranuclear inclusions with fusion of epithelial cells. What is the causative microorganism?

a. Cytomegalovirus
b. Herpes Simplex Virus
c. Human Papilloma Virus

A

b. Herpes Simplex Virus

11
Q

How do we prevent a respiratory infection?

a. N95 Respirator Mask
b. N99 Respirator Mask

A

a. N95 Respirator Mask

12
Q

Which drug can cause lipodystrophy?

a. Maraviroc
b. Raltegravir
c. Saquinovir

A

c. Saquinovir

protease inhibitor

13
Q

What is most common in burn patients?

A

Pseudomonas aeruginosa

14
Q

Which country has a prevalence of both types of urinary and intestinal schistosomiasis?’

a. china
b. egypt
c. brazil

A

b. egypt

15
Q

What is the most important virulence factor of yersinia pestis?

a. pilli
b. Capsule
c. V and W antigens
d. Yops

A

b. Capsule

16
Q

Which Method is best used for sterilization of Plasma Solutions?

a. Incineration
b. Autoclave
c. Membrane Filtration
d. Pasteurization

A

c. Membrane Filtration

17
Q

Where is the highest incidence of Yellow fever?

a. congo
b. GCC countries
c. south america
d. egypt

A

c. south america

18
Q

Which bacterium uses rats as the reservoir?

a. Bordetella pertussis
b. Yersinia pestis

A

b. Yersinia pestis

19
Q

What is responsible for anaphylactic reactions?

a. B cells
b. Mast cells
c. Macrophage

A

b. Mast cells

20
Q

Which complement attracts neutrophils to the infection site?

A

C3a

another exam says C5a

21
Q

Why do we change a toxin to a toxoid?

a. to increase immunogenicity
b. to decrease pathogenicity
c. to increase complement response

A

b. to decrease pathogenicity

22
Q

What does the antiviral “Fomivirsen” inhibit in a virus?

a. The Primary Stage of Protein Synthesis, which is mRNA Translation
b. The Primary Stage of Protein Synthesis, which is tRNA Translation
c. The Secondary Stage of Protein Synthesis, which is mRNA Translation
d. The Secondary Stage of Protein Synthesis, which is tRNA Translation

A

a. The Primary Stage of Protein Synthesis, which is mRNA Translation

23
Q

Which country has the highest absolute number of TB cases?

a. Africa
b. America
c. South East Asia
d. Nigera

A

c. SouthXEast Asia

a= highest incidence, not highest absolute number

24
Q

Which cell helps the spread of HIV to the central nervous system?

A

Macrophages

25
Q

How do you slow down proteolytic enzymes?

A

by cold temperature

26
Q

Where is meningococcal meningitis most frequent?

a. Egypt
b. America
c. South East Asia
d. Nigeria

A

d. Nigeria

27
Q

A-79-year-old man developed fever swelling pain in the knees 2 weeks ago; he attended his camel delivery. What is the causative organism?

a. Brucella abortus
b. Brucella melitensis
c. Brucella suis

A

b. Brucella melitensis

28
Q

Which bacterium is the Reservoir of cattle?

a. Brucella abortus
b. Brucella melitensis
c. Brucella suis

A

a. Brucella abortus

29
Q

What characterizes IgA?

a. Predominant in the RT
b. Predominant in the GIT
c. Predominant in the urinary tract

A

b. Predominant in the GIT

30
Q

Which of the people perceive themselves to have been at risk of HIV?

A

the worried well

31
Q

SubKPleural granulomatous nodule with granulomatous lymphadenitis. What is the causative microorganism?

A

Mycobacterium tuberculosis