Definition: An irregular unpaired bone situated at the SKULL BASE and wedged between the frontal, temporal, and occipital bones (FRONTAL BONE; TEMPORAL BONE; OCCIPITAL BONE). Sphenoid bone consists of a median body and three pairs of processes resembling a bat with spread wings. The body is hollowed out in its inferior to form two large cavities (SPHENOID SINUS).
fractures: coordinate SPHENOID BONE /inj (IM) + SKULL FRACTURES (IM); neoplasms: coordinate IM with SKULL NEOPLASMS (IM)
ExamplesSella Turcica
Other names Sphenoid Bones; Bones, Sphenoid; Bone, Sphenoid
