Identify the structure (marked by the arrow) in the given image:
Answer B. Pyriform fossa
Larynx: Pyriform recess/sinus/fossa
- On either side of the laryngeal orifice in humans is a recess, termed the pyriform sinus (also piriform recess, piriform sinus, piriform fossa, or smuggler’s fossa), which is bounded medially by the aryepiglottic fold, laterally by the thyroid cartilage and thyrohyoid membrane. The fossae are involved in speech.
- The term “pyriform,” which means “pear-shaped,” is also sometimes spelled “piriform”.