Podcast
Questions and Answers
What forms the boundary between the anterior and middle cranial fossae?
What forms the boundary between the anterior and middle cranial fossae?
- Prechiasmatic sulcus (correct)
- Optic canals
- Petrous part of the temporal bone
- Sella turcica
Which bone contributes to the elevation of the floor in the midline of the middle cranial fossa?
Which bone contributes to the elevation of the floor in the midline of the middle cranial fossa?
- Frontal bone
- Temporal bone
- Sphenoid bone (correct)
- Ethmoid bone
What does the sella turcica contain?
What does the sella turcica contain?
- Parotid gland
- Pituitary gland (correct)
- Thyroid gland
- Pineal gland
Which part of the sphenoid bone is uniquely modified and located posterior to the chiasmatic sulcus?
Which part of the sphenoid bone is uniquely modified and located posterior to the chiasmatic sulcus?
What do the lateral projections from the tuberculum sellae form?
What do the lateral projections from the tuberculum sellae form?
Which part of the temporal bone contributes to the posterior boundaries of the middle cranial fossa?
Which part of the temporal bone contributes to the posterior boundaries of the middle cranial fossa?
What forms a distinct boundary between the lateral parts of the anterior and middle cranial fossae?
What forms a distinct boundary between the lateral parts of the anterior and middle cranial fossae?
Where does each lesser wing of the sphenoid end laterally in relation to the greater wing of the sphenoid?
Where does each lesser wing of the sphenoid end laterally in relation to the greater wing of the sphenoid?
What serves as the anterior point of attachment for the tentorium cerebelli in the skull?
What serves as the anterior point of attachment for the tentorium cerebelli in the skull?
Through which opening in the lesser wing of the sphenoid does the ophthalmic artery and optic nerve pass as they exit the cranial cavity to enter the orbit?
Through which opening in the lesser wing of the sphenoid does the ophthalmic artery and optic nerve pass as they exit the cranial cavity to enter the orbit?
Where is the sella turcica located in relation to the sphenoid bone?
Where is the sella turcica located in relation to the sphenoid bone?
What structure overhangs the anterior part of the middle cranial fossae and ends laterally at the junction of the frontal bone and greater wing of sphenoid?
What structure overhangs the anterior part of the middle cranial fossae and ends laterally at the junction of the frontal bone and greater wing of sphenoid?
What is the bony ridge at the top of the posterior wall of the sella turcica called?
What is the bony ridge at the top of the posterior wall of the sella turcica called?
Which of the following nerves does NOT pass through the superior orbital fissure?
Which of the following nerves does NOT pass through the superior orbital fissure?
What structure passes through the foramen rotundum?
What structure passes through the foramen rotundum?
Which fossa serves as a major passageway between the middle cranial fossa and the orbit?
Which fossa serves as a major passageway between the middle cranial fossa and the orbit?
Where are the greater wing and lesser wing of the sphenoid located in relation to each other?
Where are the greater wing and lesser wing of the sphenoid located in relation to each other?
Which structure allows passage between the extracranial infratemporal fossa and the middle cranial fossa?
Which structure allows passage between the extracranial infratemporal fossa and the middle cranial fossa?
