Is the pyriform sinus part of the larynx?
The term “pyriform,” which means “pear-shaped,” is also sometimes spelled “piriform”. Deep to the mucous membrane of the pyriform fossa lie the recurrent laryngeal nerve as well as the internal laryngeal nerve, a branch of the superior laryngeal nerve….
| Pyriform sinus | |
|---|---|
| FMA | 55067 |
| Anatomical terminology |
What is a pyriform sinus?
The pyriform sinus (also spelled piriform sinus and also known as the pyriform recess, pyriform fossa, and smuggler’s fossa) is the pear-shaped subsite of the hypopharynx located posterolaterally to either side of the laryngeal opening.
What is pyriform sinus cancer?
Medial wall pyriform sinus tumors usually spread along the mucosal surface to the aryepiglottic folds and can invade into the larynx by involving the paraglottic space. Tumors of the lateral wall and apex commonly invade the thyroid cartilage.
What opens into sinus of larynx?
The anterior part of the ventricle leads up by a narrow opening into a pouch-like diverticulum, a mucous membranous sac of variable size called the appendix of the laryngeal ventricle. The appendix (also called the laryngeal saccule, pouch or Hilton’s pouch) extends vertically from the laryngeal ventricle.
What is the Valleculae and pyriform sinuses?
The valleculae and the pyriform sinuses are known as the pharyngeal recesses or side pockets, into which food may fall and reside before or after the swallowing reflex triggers. Esophagus – consists of a hollow muscular tube 23 to 25 cm long with a sphincter at each end.
Where is the pyriform sinus located in the larynx?
The entrance to the larynx, viewed from behind, with Pyriform sinus labeled at bottom left.
What is the function of the pyriform fossae?
The fossae are involved in speech. The term “pyriform,” which means “pear-shaped,” is also sometimes spelled “piriform”. Deep to the mucous membrane of the pyriform fossa lie the recurrent laryngeal nerve as well as the internal laryngeal nerve, a branch of the superior laryngeal nerve.
What is the left hand picture of the larynx?
The left hand picture shows a large supraglottic mass which is deep in the tissues of the larynx. The picture on the right shows a 60 year old patient with a lymphoma arising from the left epiglottis and vallecula. Vocal Cord Nodules: These nodules are similar to calluses on a worker’s hands.
Which is the anterior commissure of the larynx?
Anterior commissure: convergence of thyroepiglottic, vestibular and vocal ligaments and conus elasticus; tendon provides anterior attachment for true vocal cords; tendon also separates glottic and supraglottic parts of larynx