During acute inflammation, histamine-induced increased vascular permeability causes the formation of exudates (inflammatory edema)Which one of the listed cell types is the most likely source of the histamine that causes the increased vascular permeability
Anonymous Quiz
8%
a) Endothelial cells
0%
b) Fibroblasts
8%
c) Lymphocytes
83%
d) Mast cells
0%
e) Neutrophils
24) Caisson's discase is caused by:
Anonymous Quiz
0%
a) Amniotic fluid embolism
9%
b) Tumour embolism
18%
c) Hyper coagulability
73%
d) Air or gas embolism
53. Cells that engulf fibrin are:
Anonymous Quiz
0%
a) Neutrophils
0%
b) Eosinophils
100%
c) Macrophages
0%
d) Lymphocytes
10) The most common cause of infarction of an organ or tissue is:
Anonymous Quiz
9%
a) Venous occlusion due to twisting of the organ
64%
b) Thromboembolism
9%
c) Compression of organ in the hernial sac.
18%
d) Ballooning of atheroma secondary to haemorrhage into the plaque.
49. All of the following are features of cellulitis except:
Anonymous Quiz
7%
a) Caused by Streptococcus hemolyticus infection.
7%
b) Pus is thin and sanguinous
43%
c) The main inflammatory cells are lymphocytes and plasma cells.
14%
d) Mainly occurs in loose tissues.
29%
. e) Most common in diabetics
46. Xeroderma pigmentosum is one of:
Anonymous Quiz
0%
a) Autosomal dominant diseases
15%
b) Familial cancer syndromes
23%
c) Non-hereditary predisposing conditions
62%
d) Defective DNA repair syndromes
Which of the following is an effect of chemical mediators?
Anonymous Quiz
0%
a) Increased vascular permeability
0%
b) Chemotaxis
0%
c) Fever
100%
d) All of the above
39. What type of leukocyte actively participates in acute inflammatory processes and contains myeloperoxidase within its primary (azurophilic) granules and alkaline phosphatase in its secondary (specific) granules?
Anonymous Quiz
92%
a) Neutrophils
8%
b) Eosinophils
0%
c) Monocytes
0%
d) Lymphocytes
0%
e) Plasma cells
13. Which of the following is not correct regarding carcinoma in situ:
Anonymous Quiz
7%
a) Pre-invasive stage of carcinoma
27%
b) Characterized by severe dysplasia without invasion of the basement membrane
60%
c) Common sites include liver and kidney
7%
d) Cells are pleomorphic and hyperchromatic with increased mitoses
. Which of these is not a clinical feature of inflammation?
Anonymous Quiz
6%
a) redness
94%
b) necrosis
0%
c) pain
0%
d) heat
In acute inflammation chemotactic agents cause endothelial cell activation by all of the following except:
Anonymous Quiz
23%
a) Activation of oxidative burst
15%
b) De-granulation and secretion of enzymes
0%
c) Production of arachidonic acid metabolite
62%
d) Inhibition of cellular adhesion
0%
e) Modulation of leukocyte adhesion
18) Shock is a circulatory disturbance characterized
Anonymous Quiz
0%
a) Increased blood pressure
86%
b) Decreased volume of circulating blood
0%
c) Elevated body temperature
14%
d) Decreased volume of interstitial fluid
. Chemotatic factors may include the following except:
a) Leukotriene B4 b) Chemokine c) Nitric oxide d) Bacterial products
a) Leukotriene B4 b) Chemokine c) Nitric oxide d) Bacterial products
Anonymous Quiz
12%
a) Leukotriene B4
0%
b) Chemokine
82%
c) Nitric oxide
6%
d) Bacterial products
11) Which of following statements are FALSE?
Anonymous Quiz
79%
a) Embolic obstruction of small or medium sized arteries results in pulmonary infarct
7%
b) Multiple PEs can lead to development of pulmonary hypertension & chronic right heart failure.
14%
c) 60-80% of PEs are clinically silent
0%
d) Natural course of PE includes resolution & organization of the emboli.
43. A benign tumor known to be precancerous:
Anonymous Quiz
16%
a) Leiomyoma
16%
b) Squamous cell papilloma
68%
c) Villous bladder papilloma
0%
d) Fibroadenoma
51. Which of the following is not a feature of acute inflammation?
.
.
Anonymous Quiz
88%
a) Persistent vasoconstriction.
0%
b) Vasodilatation
6%
c) Increased vascular permeability.
6%
d) Vascular stasis.
0%
e) Emigration of leucocytes
35. During the early stages of the inflammatory response, histamine induced increased vascular permeability is most likely to occur in
Anonymous Quiz
5%
a) Arteries
24%
b) Pre-capillary arterioles
10%
c) Capillaries
57%
d) Post-capillary venules
5%
e) Veins
12) Common risk factors for arterial thrombo-emboli include the following EXCEPT:
Anonymous Quiz
10%
a) Acute myocardial infarction
40%
b) Paradoxical embolism from venous thrombi
30%
c) Rheumatic heart disease
20%
d) Cardiomyopathy