Osteology of Head & Neck - Sphenoid Bone

Sphenoid Bone - It has
Body
Greater wing
Lesser wing
Pterygoid process
Body is cuboid in shape
It has 6 surfaces
Superior surface
Inferior Surface
Anterior Surface
Posterior surface
two lateral surfaces
Superior surface presents - jug sphenoidale, sulcus chiasmaticus, tuberculum sella, hypophyseal fossa & dorsal sella
Inferior surface presents - sphenoidal rostrum, concha, vaginal process.
Anterior surface presents - ethmoidal spine
Posterior surface articulates with basi occiput by primary cartilaginous joint
lateral surface presents carotid sulcus
Greater wing presents - 4 surfaces - superior or cerebral surface, lateral surface, orbital surface
2 borders - posterior & lateral or squamosal border
Lesser wing presents - 2 surfaces - superior & inferior
2 borders - anterior & posterior
Pterygoid process presents root, medial & lateral pterygoid plate
The features & attachments, structures passing through the foramina are discussed in detail in this video
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