Unlock the secrets of the mysterious Sphenoid Bone with our simple and friendly guide! 🦴🌟 Dive into the world of cranial anatomy as we break down the complexities and transform the 'scary' bone into an easy-to-understand marvel. Perfect for students, medical enthusiasts, and anyone eager to conquer the intricacies of the human skull with confidence! 🧠 #SphenoidBone #AnatomySimplified #CranialAnatomy #MedicalEducation #LearnAnatomy #SkullAnatomy #EasyLearning #SphenoidSimplified #EducationalGuide #MedicalStudents #AnatomyExploration #BonesOfTheSkull #CranialBones #AnatomyTutorial #HumanAnatomy #BiologyEducation #SphenoidDemystified #AnatomyMadeEasy #ConfidentLearning #StudySkills
Sphenoid bone of skull
Anatomical points
1. Body lies centrally
2. Two greater wings and two lesser wings project laterally from the sides of the body
3. Two pterygoid processes pass downwards from adjoining parts of the body and greater wings
Morphological type of bone: pneumatic irregular bone
Development:
up to rostral half of sellaturcica is developed from neural crest
caudal half of sellaturcica is developed from paraxial mesoderm
Parts of sphenoid bone
Body
Two greater wings
Two lesser wings
Two pterygoid processes
Body
It has six surfaces : superior , inferior , anterior , posterior and two lateral surfaces
Shape : cuboid
It contains two large air sinuses which are separated from each other by a septum
Superior or cerebral surface
Articulates with ethmoid bone anteriorly and basilar part of occipital bone posteriorly. It shows:
1. Ethmoidal spine : it is articulate with posterior border of cribriform plate of ethmoid bone
2. Jugumsphenoidale: smooth area which is the part of anterior cranial fossa . this part is related with gyri recti of cerebrum and olfactory tracts
3. Sulcus chiasmaticus: it is a groove which connects both optic canal . it lodges optic chiasma
4. Tuberculum sellae: round elevation it bears middle clinoid processes
5. Sella turcica: deep depression behind the tuberculum sellae . deepest part of sellaturcica is known as hypophyseal fossa
6. Dorsum sellae: square shape bone which form posterior boundary of sellaturcica . it bears posterior clinoid processes
7. Clivus: slopping area behind dorsum sellae.it continue with basilar part of occipital bone . this part is related with pons
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1. Difference between : microscopicanatomybd.blogspot.com
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2. Easy humanatomy : easyhumanatomy73.blogspot.com, [ Ссылка ]
3. easy humanatomy facebook page
4. For powerpoint presentation
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