This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
A foreign body usually gets arrested in which pa of esophagus? 
Select and explain. 
A. Cardiac pa of the esophagus, B. In the middle third of the esophagus, C. Below the cricopharynx, D. Above the cricopharynx
D: Above the cricopharynx
Answer: D: Above the cricopharynx 
Explanation: The first constriction where the esophagus commences is at the cricopharyngeal sphincter: this is the narrowest poion of the esophagus and is the most common site of foreign body