Anterior Cranial Fossa

Question 1

What is the posterior boundary of the anterior cranial fossa?

Answer 1

a line drawn along the lesser wing of the sphenoid, anterior clinoid processes, and sphenoidal jugum

Question 2

What constitutes the bony floor of the anterior cranial fossa?

Answer 2

• orbital plates of frontal bone
• crista galli
• cribriform plate of ethmoid

Question 3

What is contained in the anterior cranial fossa?

Answer 3

• frontal poles of frontal lobes of cerebrum

- olfactory bulb

Question 4

What part of the dura mater has an attachment in the anterior cranial fossa?

Answer 4

falx cerebri

Question 5

What ostia are observed in the anterior cranial fossa?

Answer 5

• cribriform plate
• anterior and posterior ethmoidal foramina
• foramen cecum

Question 6

What passes through the cribriform plate?

Answer 6

fila olfactoria of cranial nerve I, the olfactory nerve

Question 7

What regions/parts of the head will the cribriform plate communicate with?

Answer 7

• nasal cavity

- anterior cranial fossa

Question 8

The cribriform plate connects the anterior cranial fossa with what?

Answer 8

the nasal cavity

Question 9

What passes through the foramen cecum?

Answer 9

an emissary vein

Question 10

What regions/parts of the head will the anterior ethmoid foramen communicate with?

Answer 10

• orbit

- anterior cranial fossa