Q1. A 45-year-old male presents with crushing chest pain. Most likely diagnosis?
A. Pericarditis
B. Myocardial infarction
C. Aortic dissection
D. Pulmonary embolism
Answer: B
Explanation: ST elevation with crushing pain suggests MI.

Q2. Which cranial nerve supplies the muscles of mastication?
A. Facial nerve
B. Trigeminal nerve
C. Vagus nerve
D. Hypoglossal nerve
Answer: B
Explanation: The mandibular division of V supplies the muscles of mastication.