Ethmoid bone — location?
Anterior skull base, medial orbit wall, nasal septum
Ethmoid — location?
Anterior skull base, nasal septum, medial orbit walls.
Ethmoid bone — parts?
Cribriform plate, perpendicular plate, lateral masses
Sphenoid — shape?
Butterfly-shaped at skull base.
Cribriform plate — role?
Transmits olfactory nerves (CN I)
Temporal — parts?
Squamous, mastoid, petrous.
Perpendicular plate — function?
Forms nasal septum
Cribriform plate — function?
Passage of olfactory nerves (CN I).
Lateral masses — contain?
Ethmoidal cells and conchae
Sella turcica — houses?
Pituitary gland.
Ethmoid conchae & meatuses — significance?
Air circulation and drainage pathways in nasal cavity
Pterygoid processes — role?
Muscle attachments, form pterygoid fossa.
Sphenoid bone — location?
Central skull base, behind orbits
Temporal bone — features?
Zygomatic process, mastoid, styloid processes.
Sphenoid bone — parts?
Body, lesser wings, greater wings, pterygoid processes
Sphenoid body — contains?
Sphenoidal sinuses, sella turcica
Sella turcica — houses?
Pituitary gland
Lesser wings — form?
Anterior boundary of optic canal
Greater wings — contribute to?
Cranial floor, lateral orbital wall
Pterygoid processes — features?
Medial/lateral plates, pterygoid hamulus
Optic canal — transmits?
CN II and ophthalmic artery
Sphenoid foramina?
Rotundum, ovale, spinosum (cranial nerves and vessels)
Temporal bone — location?
Lateral sides of skull
Temporal bone — parts?
Squama, mastoid, petrous, tympanic parts
Squama — function?
Attachment for temporalis muscle
Mastoid process — features?
Contains mastoid air cells, SCM attachment
Petrous portion — houses?
Inner ear structures, carotid canal
Styloid process — role?
Muscle and ligament attachment
Temporal bone — other features?
Mastoid foramen, sigmoid sulcus, stylomastoid foramen
Summary — ethmoid role?
Forms nasal septum, medial orbit wall; transmits olfactory nerves
Summary — sphenoid role?
Central skull base; contains sella turcica and foramina
Summary — temporal role?
Protects auditory/vestibular organs; provides muscle attachments
Testez vos connaissances avec un QCM de 19 questions sur Ethmoid & Sphenoid Bones.
1. Where is the ethmoid bone primarily localized within the skull?
2. Which structure in the ethmoid bone is responsible for attaching the falx cerebri?
Révisez le cours complet dans la fiche de révision de Ethmoid & Sphenoid Bones.
Voir la fiche →Anatomie
Anatomie
Importe ton cours et l'IA génère des flashcards en 30 secondes.
Générateur de flashcards