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Cranium Anatomy 3

Cranium Anatomy part 3 (RAD 125)

QuestionAnswer
Sphenoid Bone- Irregular, wedge-shaped bone that vaguely resembles a bat Located in base of cranium (floor) 
4 Parts of Sphenoid Bone Two lesser wings Two greater wings Body
4 Parts of Sphenoid Bone Two pterygoid processes Lateral process Medial process (both have a Hamulus)
Deep depression on superior surface of body  Sella Turcica
The Body of Sphenoid Bone forms the Posterior bony wall of nasal cavity
The Sella Turcica houses the Pituitary Gland
The Sella Turcica is located ¾ inch anterior and ¾ inch superior to EAM
Anterior border of sella turcica Tuberculum Sellae
Posterior border of sella turcica Dorsum Sellae
Top borders of dorsum sellae Posterior Clinoid Processes
The posterior portion of lesser wings Anterior Clinoid Process
Slanted area posterior and inferior to dorsum sellae Clivus
Openings between body and  lesser wings for the optic nerves Optic Foramen/Canal
Opening between lesser and greater wings seen in the orbits Superior Orbital Fissures
Openings on greater wings for maxillary nerves​ Foramen Rotundum
Opening at superior portion of pterygoid process Pterygoid Canals
The Optic Groove extends Across tuberculum sellae, connecting the optic canals
Frontal bone to lesser wings of sphenoid Anterior Cranial Fossa
Lesser wings of sphenoid to petrous ridges of temporal bone Middle Cranial Fossa
Area posterior to petrous ridges Posterior Cranial Fossa
The Anterior, Middle, and the Posterior Cranial Fossa make up the 3 Regions of Cranial Floor 
The _______ Forms large part of middle cranial fossa and a small part of posterior cranial fossa Temporal Bone
Situated on each side of cranial base between greater wings of sphenoid and occipital bone Temporal Bone Location
Posterior Sphenoid Bone Openings Foramen Ovale
Posterior Sphenoid Bone Openings Foramen Spinosum
There are ___________ located on the body of the Sphenoid Bone 2 Sphenoid Sinuses 
The Sphenoid Bone is Anterior to the? Temporal Bones  Basilar portion of occipital
The Sphenoid Bone is Posterior to the? Ethmoid Maxillae
The Sphenoid Bone is Inferior to the? Frontal Bone
Created by: user-2016295
 

 



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