👉 Sphenethoid is a type of bone in the human skull that is involved in the development and function of the brain. It contains two pairs of small, oval-shaped bones called sphenoids, which are connected by an annulus, and a pair of large, oval-shaped bones called sphenoidal cartilages. The sphenoid bone and sphenoidal cartilage play a crucial role in the structure and function of the cranial cavity. The sphenoid bone is responsible for