The Orbit Flashcards
What term is used to identify the periosteum of the orbit?
Periorbita
What term is used to identify the periosteum of the cranium?
Pericranium
What term is used to identify the periosteum of the cranial vault?
Endocranium
What are the bones forming the margins of the orbit?
- frontal
- maxillary
- zygomatic
What landmarks form the apex of the orbit?
Convergence of the superior orbital fissure and inferior orbital fissure
What bones form the superior wall of the orbit?
- sphenoid
- frontal
What opening is located along the superior wall of the orbit?
Optic canal
What are the contents of the optic canal?
- optic nerve
- ophthalmic artery
What bones form the medial wall of the orbit?
- ethmoid
- frontal
- lacrimal
- sphenoid
What are the openings located along the medial wall of the orbit?
- anterior ethmoid foramen
- posterior ethmoid foramen
What is the name given to the medial wall of the orbit?
Lamina papyracea
What features may be observed on the medial wall of the orbit?
- lacrimal groove
- fossa for the lacrimal sac
- anterior ethmoid foramen
- posterior ethmoid foramen
What bones form the lateral wall of the orbit?
- sphenoid
- zygomatic
What opening is located along the lateral wall of the orbit?
Superior orbital fissure
What are the contents of the superior orbital fissure?
- oculomotor cranial nerve
- trochlear cranial nerve
- abducent/abducens cranial nerve
- ophthalmic division of the trigeminal cranial nerve
- ophthalmic veins
