The corniculate cartilages (cartilages of Santorini) are two small conical nodules consisting of yellow elastic cartilage

Cartilage

Cartilage is a flexible connective tissue found in many areas in the bodies of humans and other animals, including the joints between bones, the rib cage, the ear, the nose, the elbow, the knee, the ankle, the bronchial tubes and the intervertebral discs...

, which articulate with the summits of the arytenoid cartilages and serve to prolong them posteriorly and medially.

They are situated in the posterior parts of the aryepiglottic folds of mucous membrane

Mucous membrane

The mucous membranes are linings of mostly endodermal origin, covered in epithelium, which are involved in absorption and secretion. They line cavities that are exposed to the external environment and internal organs...

, and are sometimes fused with the arytenoid cartilages.