Cranial Fossae. A. Anterior Cranial Fossa

Question 1

What constitutes the bony floor of the anterior cranial fossa?

Answer 1

orbital plates of frontal bone, crista galli & cribriform plate of ethmoid

Question 2

What ostia are observed in the anterior cranial fossa?

Answer 2

cribriform plate, anterior & posterior ethmoidal foramina and foramen cecum

Question 3

What passes through the cribriform plate?

Answer 3

fila olfactoria of cranial nerve I, the olfactory nerve

Question 4

What passes through the foramen cecum?

Answer 4

an emissary vein