Question
The structure marked in the image is?
| A. |
Post cricoid
|
| B. |
Vallecula
|
| C. |
Pyriform fossa
|
| D. |
Pharyngeal pouch
|
Show Answer
|
Correct Answer � C
Explanation
|
|
- Pyriform Fossa is a potential space that lies on either side of the larynx.
- They are two in number. It is shaped like a pyramid with the base point above and the apex below.
- They belong to the hypopharyngeal area of the pharynx.
- It has two parts; the shallow upper part and a deeper lower part.
Boundaries:
- The pyriform fossa is bounded laterally by the mucosa covering the lamina of the thyroid cartilage.
- Medially it is bounded by the aryepiglottic fold and arytenoid cartilages above and the cricoid cartilage below.
- Superiorly it is bounded by the lateral glossoepiglottic fold (Pharyngoepiglottic fold), inferiorly it continues with the oesophagus.
