Correct Answer - C Ans. is 'c' i.e., Cricopharynx Inferior | Anatomy embryology histology videos & books

Correct Answer - C
Ans. is 'c' i.e., Cricopharynx

Inferior constrictor muscle has two parts :-

(i) Thyropharyngeous with oblique fibres, and
(ii) Cricopharyngeous
with transverse fibres.

Between these two parts of inferior constrictor exists a potential gap
called Killan's dehiscence. It is also called the gateway to tear as
perforation can occur at this site during esophagoscopy. It is also the site for herniation of pharyngeal mucosa in case of pharyngeal
pouch.

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