MDS PREP
Which of the following is the explanation for the laboratory findings in an alcoholic with chronic obstructive lung disease, secondary to cigarette smoking, of persistently lower serum levels than expected of theophylline which is being used as a bronchodilator, even though the drug is taken according to schedule?
1) Cirrhosis of the liver
2) Decreased absorption
3) Enhanced liver metabolism
4) Increased urinary clearance
General Pathology Answer: 3
Enhanced liver metabolism is the explanation for persistently lower serum levels of theophylline in an alcoholic with chronic obstructive lung disease.
Progenitor hematopoietic stem cells originate in -
1) Bone Marrow
2) Thymus
3) Lymph node
4) Spleen
General Pathology
Answer: 1
Progenitor hematopoietic stem cells originate in the bone marrow, where they differentiate into various blood cell lineages.
The antecedents of Sq. cell carcinoma is/are:
1. Leukoplakia
2. Solar keratosis
3. Margins of long standing draining sinuses
4. All of the above
Pathology
Answer: 4
All of the listed conditions (leukoplakia, solar keratosis, and margins of long-standing draining sinuses) are known precursors to squamous cell carcinoma.
The maximum permissible dose of radiation to the operator of an X-ray machine is
1. 0.05 rem per year
2. 0.5 rem per year
3. 5.0 rem per year
4. 50 rem per year
Oral Pathology
Answer: 3
The maximum permissible dose of radiation to the operator of an X-ray machine is 5.0 rem per year.
Osteomalacia is
1. Defective osteoid + normal mineralization
2. Normal osteoid + defective mineralization
3. Abnormal osteoid + abnormal mineralization
4. Normal osteoid and demineralization
Osteomalacia is characterized by abnormal osteoid and abnormal mineralization.
Grid is used
1. To remove secondary radiation
2. Filter the radiation
3. Removes scattered radiation
4. None of the above
Oral Pathology
Answer: 3
Grids are used to remove scattered radiation from the X-ray beam.
Giant cells are a characteristic histopathologic finding in
1. Aphthous ulcers
2. Aneurysmal bone cyst
3. Brown tumour of hyper parathyroidism
4. Dentigerous cyst
Oral Pathology
Answer: 2
Giant cells are a characteristic histopathologic finding in an aneurysmal bone cyst.
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.