Question:
Killian's dehiscence is seen in?
Killian's dehiscence is seen in?
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Think of the weak gap between thyropharyngeus and cricopharyngeus.
Updated On: Jun 24, 2026
- Oropharynx
- Nasopharynx
- Cricopharynx
- Vocal cords
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The Correct Option is C
Solution and Explanation
Step 1: The inferior constrictor muscle of the pharynx has two parts. The upper thyropharyngeus has oblique fibres, and the lower cricopharyngeus has transverse fibres.
Step 2: Between these two parts there is a potential weak area in the muscular wall called Killian's dehiscence. This lies at the cricopharyngeal level, so the correct answer is cricopharynx.
Step 3: Clinically this is the gateway to tears, because perforation during esophagoscopy tends to occur here. It is also the site where the pharyngeal mucosa herniates to form a pharyngeal pouch (Zenker's diverticulum).
Step 4: The oropharynx, nasopharynx and vocal cords are not the site of this dehiscence, so they are incorrect.
Step 2: Between these two parts there is a potential weak area in the muscular wall called Killian's dehiscence. This lies at the cricopharyngeal level, so the correct answer is cricopharynx.
Step 3: Clinically this is the gateway to tears, because perforation during esophagoscopy tends to occur here. It is also the site where the pharyngeal mucosa herniates to form a pharyngeal pouch (Zenker's diverticulum).
Step 4: The oropharynx, nasopharynx and vocal cords are not the site of this dehiscence, so they are incorrect.
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