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PA-CAT Anatomy > General Questions of the Cranial Foramina > Flashcards

General Questions of the Cranial Foramina Flashcards

1
Q

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

A

anteriorly

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2
Q

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

A

posteriorly

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3
Q

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

A

laterally

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4
Q

The endocranium has 3 cranial fossae which are…..

A
  1. anterior cranial fossa
  2. middle cranial fossa
  3. posterior cranial fossa
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5
Q

This is the most shallow and superior cranial fossa.

A

Anterior fossa

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6
Q

This contains the frontal lobes and olfactory bulb.

A

anterior fossa

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7
Q

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

A

the foramen caecum

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8
Q

This separates the nasal and cranial cavities.

A

cribriform plate

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9
Q

This supports the olfactory bulb.

A

cribriform plate

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10
Q

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

A

crista galli

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11
Q

This has sieve-like plates

A

cribriform plate

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12
Q

The cribriform plate contains numerous ______ foramina for _______ fibers passage

A

olfactory; olfactory

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13
Q

These nerves pass from the _________ to the _______ cavity.

A

nasal; cranial

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14
Q

Olfactory nerves are also called

A

cranial nerve 1

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15
Q

This is a butterfly shaped fossa.

A

Middle cranial fossa foramina

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16
Q

The middle cranial fossa foramina is composed of what?

A
  1. body and wings of the sphenoid bone

2. squamous and petrous parts of the temporal bones

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17
Q

What foramina are included in the middle cranial fossa?

A
  1. optic canal
  2. superior orbital fissure
  3. foramen ovale
  4. foramen rotundum
  5. foramen spinosum
  6. foramen lacerum
  7. foramen petrosum
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18
Q

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

A

foramen vasale

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19
Q

Where is the optic canal located?

A

sphenoid bone

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20
Q

This connects the orbital and cranial cavities.

A

optic canal

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21
Q

The optic canal connects what?

A

orbital and cranial cavities

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22
Q

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

A

chiasmatic sulcus

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23
Q

The superior orbital fissure is……

A

a cleft between the lesser and great wings of the sphenoid

24
Q

The superior orbital fissure opens up where?

A

into the orbital cavity

25
Q

Cranial nerve 5 is called

A

trigeminal nerve

26
Q

Cranial nerve 3 is called

A

oculomotor nerve

27
Q

Cranial nerve 4 is called

A

trochlear nerve

28
Q

Cranial nerve 6 is called

A

abducens nerve

29
Q

What does the foramen rotundum connect?

A

pterygopalatine with the middle cranial fossae

30
Q

The foramen ovale opens up where?

A

into the infratemporal fossa

31
Q

This is among the largest foramina of the cranial base

A

foramen ovale

32
Q

The foramen ovale transmits what?

A

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

33
Q

This is also called the sphenoidal emissary foramen

A

Foramen Vesalii

34
Q

The foramen vesalii is also called what?

A

sphenoidal emissary foramen

35
Q

Where is the foramen vesalii located?

A

greater wing of the sphenoid

36
Q

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

A

foramen ovale; one

37
Q

The foramen vesali is adjacent to

A

the vein of Vesalius

38
Q

The vein of vesalius `connects _____ with the ________

A

pterygoid plexus; cavernous sinus

39
Q

this is lateral and posterior to the foramen ovale

A

foramen spinosum

40
Q

the foramen spinosum opens into the

A

infratemporal fossa

41
Q

The carotid canal connects what with the middle cranial fossa?

A

neck

42
Q

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

A

carotid foramen; temporal; foramen lacerum

43
Q

The carotid canal allows passage of which nerve?

A

deep petrosal nerve

44
Q

The foramen lacerum is filled with what after birth?

A

cartilaginous tissue

45
Q

This is the deepest depression of the cranial cavity

A

posterior cranial fossa

46
Q

This fossa supports the brainstem and cerebellum.

A

posterior cranial fossa

47
Q

The internal acoustic meatus connects what?

A

the inner ear with the posterior cranial fossa

48
Q

The internal acoustic meatus contains what?

A
  1. facial nerve
  2. vestibulocochlear nerve
  3. labyrinthine artery
  4. vestibular ganglion
49
Q

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

A

two

50
Q

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

A
  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.
51
Q

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

A

vestibular and cochlear nerves; facial nerves

52
Q

This is the largest opening of the cranial base.

A

foramen magnum

53
Q

The foramen magnum is connected to ________ through the clivus

A

dorsum sellae

54
Q

The hypoglossal canal is anterolateral to

A

the foramen magnum

55
Q

The hypoglossal canal is at the base of

A

the occipital condyles

PA-CAT Anatomy (11 decks)

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