It is active during swallowing, and partially during breathing and speech. ![]() It may also occur in other parts of the esophagus, such as between the oblique and. It only involves the mucosa and submucosal layers and does not involve the muscular layer, hence making it a false diverticulum. ![]() In this article, we shall look at the anatomy of the. The pharynx is comprised of three parts (superior to inferior): Laryngopharynx. It begins at the base of the skull and ends at the inferior border of the cricoid cartilage (C6). It is supplied by the vagus nerve (CN X). Zenker's diverticulum is a type of diverticulum that develops in the hypopharynx, typically between the cricopharyngeus (CP) muscle and the inferior pharyngeal constrictor muscle. The pharynx is a muscular tube that connects the oral and nasal cavity to the larynx and oesophagus. It arises from the sides of the cricoid cartilage and the thyroid cartilage. It is the thickest of the three outer pharyngeal muscles. ![]() \)ĬRICOPHARYNGEAL MYOTOMY: SURGICAL TECHNIQUEĬricopharyngeal myotomy may be indicated for cricopharyngeal spasm causing dysphagia or aspiration and is done in patients undergoing external resection of a pharyngeal pouch / Zenker’s diverticulum (ZD).Ĭricopharyngeal dysfunction / achalasia may be primary or secondary. The inferior pharyngeal constrictor muscle is a skeletal muscle of the neck.
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