MDS PREP
Which of the following conditions can lead to bone demineralization?
1) Osteopetrosis
2) Hyperparathyroidism
3) Pseudohypoparathyroidism
4) All of the above
Hyperparathyroidism and pseudohypoparathyroidism can lead to bone demineralization, while osteopetrosis is characterized by increased bone density.
Radiation produced form tube other than focal spot is called
1. Stray radiation
2. Scattered radiation
3. Characteristic radiation
4. Primary radiation
Oral Pathology
Answer: 1
Radiation produced from the tube other than the focal spot is called stray radiation.
Which of the following statements is false about Niemann-Pick disease?
1) Type A has bad prognosis
2) Type B has associated organomegaly
3) Chromosome 11 is involved
4) Inherited deficiency of aryl sulfatase is present
General Pathology
Answer: 4
Niemann-Pick disease is characterized by a deficiency of sphingomyelinase, not aryl sulfatase, and involves chromosome 11 in its genetic basis.
For extraction in a leukaemic patient
1. Consult physician
2. Obtain WBC count
3. Ontain platelet count
4. All of the above
Oral Pathology
Answer: 4
For extraction in a leukemic patient, all of the above steps should be taken.
One variant of hidebound disease is which syndrome?
1. Down"s syndrome
2. Crest syndrome
3. Greenspan"s syndrome
4. Kleinfelter"s syndrome
Oral Pathology
Answer: 2
Crest syndrome is a variant of hidebound disease.
Paroxymal noctural hemoglobinuria is due to -
1) Acquired red cell defect
2) Congential red cell defect
3) Auto immune defect
4) Lead poisoning
General Pathology
Answer: 1
Paroxysmal nocturnal hemoglobinuria is due to an acquired red cell defect, specifically a defect in the cell membrane that makes red blood cells susceptible to lysis.
Dens in dente is thought to arise as a result of
1. a normal tooth but enclaved within an other tooth, during formation
2. proliferation and evagination of an area of the inner enamel epithelium
3. extensive growth of mesenchymal cells of pulp tissue
4. an invagination of the enamel organ during tooth formation
Oral Pathology
Answer: 4
Dens in dente is a rare developmental dental anomaly that is characterized by a tooth with an invaginated or cavity-like structure that appears like a "tooth within a tooth." It arises from an error during the morphodifferentiation stage of tooth development.
Quantity of the X-ray beam is governed by
1. kVp
2. mAs
3. Filament current
4. Length of the X-ray tube
Oral Pathology
Answer: 1
Quantity of the X-ray beam is governed by mAs (milliampere-seconds).