PassMRCEM Primary

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Answer: B) Cricopharyngeus muscle. Explanation: The first esophageal constriction occurs at the level of the cricopharyngeus muscle (upper esophageal sphincter), located at C6, where the esophagus begins at the lower border of the cricoid cartilage. Other esophageal constrictions: 1. C6 – Cricopha…

A child accidentally swallows a coin, which becomes lodged in the first constricted area of the esophagus. Where is the coin most likely located? A) Arch of the aorta B) Cricopharyngeus muscle C) Oesophageal hiatus in the diaphragm D) Left main bronchus E) Right main bronchus - from PassMRCEM MCQ…

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Answer: E) Chlamydia trachomatis. - from PassMRCEM MCQs

Answer: E) Chlamydia trachomatis. Explanation: Chlamydia trachomatis is the more common cause of neonatal conjunctivitis in the UK, typically presenting 5 days to 2 weeks after birth due to its longer incubation period. In contrast, Neisseria gonorrhoeae causes a more acute infection, often presen…

A 14 day old baby is brought to the Emergency Department by his mother. He was taken to his General Practitioner 2 days ago with red eyes. The GP prescribed chloramphenicol ointment. Today the mother noted a paroxysmal cough and wheeze. The babies observations are within normal limits. What is the m…

A 1-week-old neonate presents with watery discharge that becomes purulent. What is the most common organism causing this condition in the UK? A) Neisseria gonorrhoeae B) Staphylococcus aureus C) Herpes simplex D) Non-infectious E) Chlamydia trachomatis - from PassMRCEM MCQs

📢 Announcement — PassMRCEM Subscription Dear Candidates, We would like to inform you that we are unable to offer a subscription for the April 2026 MRCEM Primary exam, as our team currently does not have sufficient time to provide this service. We sincerely appreciate your interest and understandi…

Answer: C) Ciliated columnar epithelium. Explanation: The mucociliary escalator lines the trachea and bronchi and consists of ciliated columnar epithelial cells that move mucus and trapped particles upward toward the pharynx. Note: - Non-keratinized stratified squamous epithelium → protective, fou…

What cells are responsible for the function of the mucociliary escalator in the respiratory system? A) Stratified squamous epithelium B) Cuboidal epithelial cells C) Ciliated columnar epithelium D) Stratified squamous epithelium E) Non-ciliated squamous cells - from PassMRCEM MCQs

Median nerve