The sphenoid bone (also known simply as the sphenoid) is a butterfly-shaped single bone that lies at the middle part of the base of the skull between the frontal, temporal and occipital bones. The sphenoid bone consists of the following parts: Body of the sphenoid - the central portion; Greater wings (2) and lesser wings (2) - extend laterally from the body; Pterygoid processes (2) - descend from the junction of the body and greater wings. The body, greater wings and pterygoid processes can be i