Biopsy of the lower oesophagus in a patient with chronic reflux demonstrates epithelial metaplasia. Which of the following cell types was most likely observed in the involved areas?

Anatomy

Biopsy of the lower oesophagus in a patient with chronic reflux demonstrates epithelial metaplasia. Which of the following cell types was most likely observed in the involved areas?

The action of digastric muscle is:

Which of the following vessels supply the anal canal?

All of the following muscles are elevators of the mandible EXCEPT: