W3: S5 - Floor of the Skull Flashcards
Which bone forms the posterior boundary of the anterior cranial fossa?
Sphenoid
Which bones form the
A) anterior boundary
B) floor
C) posterior boundary
of the middle cranial fossa?
A) Sphenoid
B) Sphenoid and temporal
C) Occipital
What is shown here and what 4 bones meet at this suture?
Pterion
- Frontal
- Temporal
- Parietal
- Sphenoid
Which bones form the anterior and posterior border of the posterior cranial fossa?
Anterior - temporal
Posterior - Occipital
- Cribriform plate
- Crista galli
- Anterior cranial fossa
- Optic canal
- Foramen rotundum
- Foramen ovale
- Foramen spinosum
- Foramen lacerum
- Sella turcica
- Foramen magnum
- Hypoglossal canal
- Jugular foramen
- Internal acoustic meatus
- Superior orbital fissure
- Incisive foramen
- Inferior orbital fissure
- Palantine foramen
- Pterygoid plate
- Condylar foramen
- Stylomastoid foramen
- Carotid canal
- Styloid process
- Zygomatic arch
- Mastoid process
- Occipital condyle
- Mandibular fossa
- External occipital protuberance
What passes through the cribriform plate?
Olfactory nerve
What passes through the optic foramen?
Optic nerve
Opthalmic artery
What passes through the superior orbital fissure?
Occulomotor nerve
Trochlear nerve
Opthalmic division (V1)
Abducens nerve
Opthalmic veins
What passes through the foramen rotundum?
Maxillary division (V2)
What passes through the foramen ovale?
Mandibular division (V3)
What passes through the foramen spinosum?
MMA
MMV
What passes through the foramen lacerum?
Greater petrosal nerve
What passes through the carotid canal?
ICA
What passes through the internal acoustic meatus?
Facial
Vestibulocochlear
Labyrinth artery