General Questions of the Cranial Foramina

Question 1

The external surface of the cranial base is bordered by the frontal upper teeth in which direction?

Answer 1

anteriorly

Question 2

The external surface of the cranial base is bordered by the highest nuchal line in which direction?

Answer 2

posteriorly

Question 3

The externally surface of the cranial base is bordered by the maxillary dental arcade, zygomatic arches, and mastoid processes in which direction?

Answer 3

laterally

Question 4

The endocranium has 3 cranial fossae which are…..

Answer 4

1. anterior cranial fossa
2. middle cranial fossa
3. posterior cranial fossa

Question 5

This is the most shallow and superior cranial fossa.

Answer 5

Anterior fossa

Question 6

This contains the frontal lobes and olfactory bulb.

Answer 6

anterior fossa

Question 7

The foramina that pertains to the anterior part of the fossa is called what?

Answer 7

the foramen caecum

Question 8

This separates the nasal and cranial cavities.

Answer 8

cribriform plate

Question 9

This supports the olfactory bulb.

Answer 9

cribriform plate

Question 10

This is a vertical plate in the median sagittal plane of the ethmoid bone

Answer 10

crista galli

Question 11

This has sieve-like plates

Answer 11

cribriform plate

Question 12

The cribriform plate contains numerous ______ foramina for _______ fibers passage

Answer 12

olfactory; olfactory

Question 13

These nerves pass from the _________ to the _______ cavity.

Answer 13

nasal; cranial

Question 14

Olfactory nerves are also called

Answer 14

cranial nerve 1

Question 15

This is a butterfly shaped fossa.

Answer 15

Middle cranial fossa foramina

Question 16

The middle cranial fossa foramina is composed of what?

Answer 16

1. body and wings of the sphenoid bone

2. squamous and petrous parts of the temporal bones

Question 17

What foramina are included in the middle cranial fossa?

Answer 17

1. optic canal
2. superior orbital fissure
3. foramen ovale
4. foramen rotundum
5. foramen spinosum
6. foramen lacerum
7. foramen petrosum

Question 18

Which foramina in the middle cranial fossa are usaully not included or found in people?

Answer 18

foramen vasale

Question 19

Where is the optic canal located?

Answer 19

sphenoid bone

Question 20

This connects the orbital and cranial cavities.

Answer 20

optic canal

Question 21

The optic canal connects what?

Answer 21

orbital and cranial cavities

Question 22

This connects the optic canals on each side of the skull.

Answer 22

chiasmatic sulcus

Question 23

The superior orbital fissure is……

Answer 23

a cleft between the lesser and great wings of the sphenoid

Question 24

The superior orbital fissure opens up where?

Answer 24

into the orbital cavity

Question 25

Cranial nerve 5 is called

Answer 25

trigeminal nerve

Question 26

Cranial nerve 3 is called

Answer 26

oculomotor nerve

Question 27

Cranial nerve 4 is called

Answer 27

trochlear nerve

Question 28

Cranial nerve 6 is called

Answer 28

abducens nerve

Question 29

What does the foramen rotundum connect?

Answer 29

pterygopalatine with the middle cranial fossae

Question 30

The foramen ovale opens up where?

Answer 30

into the infratemporal fossa

Question 31

This is among the largest foramina of the cranial base

Answer 31

foramen ovale

Question 32

The foramen ovale transmits what?

Answer 32

the mandibular branch of the trigeminal nerve (cranial nerve 5)

Question 33

This is also called the sphenoidal emissary foramen

Answer 33

Foramen Vesalii

Question 34

The foramen vesalii is also called what?

Answer 34

sphenoidal emissary foramen

Question 35

Where is the foramen vesalii located?

Answer 35

greater wing of the sphenoid

Question 36

The foramen vasalii is medial to _______ and may only be present on _______ side(s)

Answer 36

foramen ovale; one

Question 37

The foramen vesali is adjacent to

Answer 37

the vein of Vesalius

Question 38

The vein of vesalius `connects _____ with the ________

Answer 38

pterygoid plexus; cavernous sinus

Question 39

this is lateral and posterior to the foramen ovale

Answer 39

foramen spinosum

Question 40

the foramen spinosum opens into the

Answer 40

infratemporal fossa

Question 41

The carotid canal connects what with the middle cranial fossa?

Answer 41

neck

Question 42

The carotid canal allows the internal carotid artery to enter from __________ of the ________ bone and exit the carotid canal near the _______ ______.

Answer 42

carotid foramen; temporal; foramen lacerum

Question 43

The carotid canal allows passage of which nerve?

Answer 43

deep petrosal nerve

Question 44

The foramen lacerum is filled with what after birth?

Answer 44

cartilaginous tissue

Question 45

This is the deepest depression of the cranial cavity

Answer 45

posterior cranial fossa

Question 46

This fossa supports the brainstem and cerebellum.

Answer 46

posterior cranial fossa

Question 47

The internal acoustic meatus connects what?

Answer 47

the inner ear with the posterior cranial fossa

Question 48

The internal acoustic meatus contains what?

Answer 48

1. facial nerve 2. vestibulocochlear nerve 3. labyrinthine artery 4. vestibular ganglion

Question 49

The internal acoustic meatus is divided by how many perpendicular crests?

Answer 49

two

Question 50

The two perpendicular crests that the internal meatus is divided into quadrants. What are they?

Answer 50

1. Anterior superior- facial nerve area 2. Anterior inferior- cochlear nerve area 3. posterior superior- superior vestibular nerve area 4. posterior inferior- inferior vestibular nerve area.

Question 51

These nerves end in the inner ear while these travel through the facial canal exiting the skull through the stylomastoid foramen.

Answer 51

vestibular and cochlear nerves; facial nerves

Question 52

This is the largest opening of the cranial base.

Answer 52

foramen magnum

Question 53

The foramen magnum is connected to ________ through the clivus

Answer 53

dorsum sellae

Question 54

The hypoglossal canal is anterolateral to

Answer 54

the foramen magnum

Question 55

The hypoglossal canal is at the base of

Answer 55

the occipital condyles