Pyriform sinus is laterally bounded by what ?
Ans. is `d' i.e., Thyrohyoid membrane It lies on either side of the larynx and extends from pharyngoepiglottic fold to the upper end of esophagus. ? It is bounded by :- i) Superiorly - Pharyngoepiglottic folds ii) Inferiorly - Lower border of cricoid iii) Laterally - Thyrohyoid membrane and thyroid cailage iv) Medially - Aryepiglottic fold Posterolateral surface of arytenoids and cricoid cailages
Interarytenoid aery
Thyroid aery
Epiglottis
Thyrohyoid membrane