Nokea
Proteins found in muscle fibres include:
- A. Vimentin
- B. Saccharin
- C. Keratin
- D. Desmin
Correct Answer: D
Rationale: Desmin: Desmin is an intermediate filament protein found in muscle fibers, playing a critical role in maintaining structural integrity and organization within muscle cells.
You may also like to solve these questions
In neonates with anomalous total pulmonary venous return and obstruction, the chest x-ray demonstrates
- A. heart enlarged
- B. prominent pulmonary artery
- C. prominent right ventricle
- D. prominent subaortic stenosis
Correct Answer: D
Rationale: Prominent subaortic stenosis is not typically seen in TAPVR.
In normal neonates:
- A. Extracellular fluid volume exceeds intracellular fluid volume
- B. In a term baby, plasma calcium levels exceed that of the mother
- C. Clamping the umbilical cord after cessation of cord pulsations increases the blood volume by 20% in the baby
- D. There are two arteries and one vein in the umbilical cord
Correct Answer: A
Rationale: In neonates, extracellular fluid volume is greater than intracellular fluid volume, reflecting the transition from intrauterine to extrauterine life.
In systemic mastocytosis:
- A. Areas of depigmentation occur
- B. Intermittent flushing is seen
- C. IgE levels are high
- D. Is relieved by aspirin
Correct Answer: B
Rationale: Intermittent flushing is a recognized symptom of systemic mastocytosis due to the release of histamine and other chemicals from mast cells.
Dome and dart P wave in lead V1 in electrocardiogram is suggestive of which of the following?
- A. Dextrocardia
- B. Left atrial ectopic rhythm
- C. Biatrial enlargement
- D. Mitral stenosis
Correct Answer: C
Rationale: The dome and dart P wave morphology is characteristic of biatrial enlargement, often seen in conditions like mitral stenosis and atrial fibrillation.
Causes of a discrete osteolytic bone lesion in a two-year-old include:
- A. Rickets
- B. Non-accidental injury
- C. Eosinophilic granuloma
- D. Acute lymphoblastic leukaemia
Correct Answer: C
Rationale: Eosinophilic granuloma is a benign bone lesion that can present with osteolytic lesions, typically seen in children as part of Langerhans cell histiocytosis.