Rheumatoid Arthritis Quiz

Flat bones of the cranium develop by which process?

A) Endochondral ossification
B) Enchondral mineralization
C) Intramembranous ossification
D) Primary spongiosa formation

Your Answer (0-5):

Osteoclasts are derived from which cell lineage?

A) Mesenchymal stem cells
B) Osteoblasts
C) Circulating monocytes
D) Fibroblasts

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#2. The destructive granulation tissue that grows over articular cartilage in rheumatoid arthritis, eventually causing fibrous ankylosis, is called:

1. Tophus
2. Pannus
3. Peel
4. Rind

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What percentage of body weight does the adult skeleton account for?

A) 8%
B) 12%
C) 15%
D) 20%

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#4. What is the prevalence (%) of rheumatoid arthritis in India approximately?

You don't have to write the % sign. Input just the numeral.

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#5. What is the approximate temperature (in °F) at which complement is inactivated, relevant to immunological assays, if it is 56°C?

Answer in 1 decimal point.

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Hydroxyapatite stores 99% of body calcium. If total body calcium is approximately 1000 g in an adult, how many grams of calcium are stored in bone?

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Which type of bone has haphazard collagen arrangement and is always abnormal in adults?

A) Lamellar
B) Cortical
C) Woven
D) Cancellous

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#3. Rheumatoid nodules are histologically characterised by:

1. Multinucleate giant cells surrounding urate crystals
2. Caseating granulomas with Langhans cells
3. Central necrosis rimmed by palisaded histiocytes
4. Fibrinoid necrosis with neutrophilic infiltrate

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The skeleton accounts for 12% of body weight. A patient weighs 75 kg. What is the approximate weight of the skeleton in kg?

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