Test 84    (pathology)

1. Following phagocytosis, micro-organisms are killed by:

a. hydrogen peroxide

b. lysozyme

c. lymphokines

d. complement system

e. Ig G

Answera.T   b.T  c.F  d.F  e.F
Complement system and Ig G act outside the cells.
Lymphokines activates macrophages.

2. True statements about collagens include:

a. it is produced in the endoplasmic reticulum of 
    the fibroblasts

b. it is secreted into the extracellular space as 
    tropocollagen

c. the total amount of collagen in a wound reaches
    normal level within 4 weeks.

d. its synthesis is impaired in the presence of 
    glucocortisoids

e. its production is impaired in vitamin C deficiency

Answera.T   b.T   c.F  d.T   e.T
The normal amount of collagen is reached after 60 to 80 days.

3. Anaphylaxis:

a. occurs 24 hours after the initial stimulus

b. causes eosinophilia

c. causes degranulation of basophils and mast cells

d. is produced by Ig E antibody

e. causes urticaria

Answera.F   b.T  c.T   d.T   e.T
Anaphylaxis is an immediate hypersensitivity response.
Eosinophils are attracted by the products 
released by basophils and mast cells.

4. Necrosis is a feature in the following chronic inflammation:

a. actinomycosis

b. syphilis

c. sarcoidosis

d. tuberculosis

e. leprosy

Answera.T  b.T  c.F  d.T   e.F
Necrosis is rare in sarcoidosis and leprosy.
It is seen in tuberculosis, actinomycosis and tertiary syphilis.

5. Amyloid reacts with the following stains:

a. Congo red

b. thioflavine -T

c. methyl violet

d. alcian blue

e. Prussian blue

Answera.T   b.T   c.T  d.F   e.F
Alcian blue stains mucopolysaccharides and Prussian blue iron.

 
 

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