Pyriform sinus
| Pyriform sinus | |
|---|---|
Pyriform sinus, a part of hypopharynx | |
The entrance to the larynx, viewed from behind, with Pyriform sinus labeled at bottom left. | |
| Details | |
| Identifiers | |
| Latin | recessus piriformis, sinus piriformis |
| MeSH | D056144 |
| TA98 | A05.3.01.024 |
| TA2 | 2880 |
| FMA | 55067 |
| Anatomical terminology | |
The pyriform sinus (also piriform recess, piriform sinus, piriform fossa, or smuggler's fossa) is a small recess on either side of the laryngeal inlet. It is bounded medially by the aryepiglottic fold, and laterally by the thyroid cartilage and thyrohyoid membrane. The fossae are involved in speech.