What is the location of Killian dehiscence?: (A) Below Superior constrictor, (B) Between Inferior constrictor, (C) Below cricopharyngeal muscle, (D) Below upper 1/3rd of smooth muscle of oesophagus
Answer is B. Inferior constrictor muscle- Thyropharyngeus above and cricopharyngeus below In between Thyropharyngeus and cricopharyngeus muscle fibres, there is a dehiscence known as Kilian's dehiscence. Protrusion of mucosa and submucosa Kilian's dehiscence is known as Zenker's diveiculum. Larimer's dehiscence- below cricopharyngeus