Cranial Fossae

Question 1

what are the cranial fossae & name them

Answer 1

depressions in floor of cranial cavity
anterior, medial, and posterior fossae

Question 2

anterior cranial fossa borders

Answer 2

anterior: frontal bone
medial: sphenoid bone
lateral: ethmoid bone

Question 3

anterior cranial fossa contents (4)

Answer 3

1. frontal lobe
2. orbital gyri
3. olfactory bulb
4. olfactory tract

Question 4

foramina of anterior cranial fossa

Answer 4

cribiform plate - contains olfactory fibers

Question 5

middle cranial fossa borders

Answer 5

temporal bone and sphenoid bone

Question 6

contents of middle cranial fossa

Answer 6

pituitary gland
temporal lobes

Question 7

specific structures that border middle cranial fossa

Answer 7

anterior: chiasmatic groove
posterior: dorsum sellae
laterally: parietals and temporals

Question 8

formamina of middle cranial fossa (5)

Answer 8

foramina of sphenoid bone
1. optic canal
2. superior orbital fissure
3. foramen rotundum
4. foramen ovale
5. formen spinosum

Question 9

posterior cranial fossa

Answer 9

largest and deepest cranial fossa

Question 10

posterior cranial fossa borders

Answer 10

temporal and occipital bone

Question 11

contents of posterior cranial fossa

Answer 11

brainstem & cerebellum

Question 12

foramina of posterior cranial fossa (3)

Answer 12

1. acoustic meatus
2. foramen magnum
   3, jugular foramina