Repeated USMLE Questions Step 1- Review- 334

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Q- Which of the following is the correct statement about the difference between a strain and a sprain?

A-  Strain affects ligaments, while a sprain affects muscles and tendons

B-  Strain affects muscles or tendons, while a sprain affects ligaments

C-  Strain affects muscles or ligaments, while a sprain affects tendons

D-  Strain affects tendons and ligaments, while a sprain affects muscles

B-  Strain affects muscles or tendons, while sprain affects ligaments- A strain is an injury to muscles or tendons (the structures that move bones). A sprain is an injury to ligaments, which connect bones and stabilize joints.



Q- Emotions, judgments, and motor aspects of speech are controlled by which one of the following lobes of the brain?

A- Frontal

B- Occipital

C- Parietal

D- Temporal

A- Frontal- The frontal lobe controls higher functions such as emotions, judgment, personality, decision-making, and the motor aspects of speech (via Broca’s area). The other lobes have roles in vision (occipital), sensory processing (parietal), and hearing/memory (temporal).



Q- A patient presents with vomiting, diarrhea and abdominal cramps a few hours after a picnic. Which is the causative organism?

A- Clostridium difficile

B- E-coli

C- Staphylococcus aureus

D- Streptococcus pyogenes

C- Staphylococcus aureus- Staphylococcus aureus food poisoning has a very rapid onset (typically 1–6 hours) due to ingestion of preformed enterotoxin. Vomiting, abdominal cramps, and sometimes diarrhea shortly after eating picnic foods (especially mayonnaise-based dishes) are classic.

 

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