Skull

Question 1

crista galli is site of attachment of —

Answer 1

falx cerebri

Question 2

what structures pass through the following:
foramen rotundum
foramen ovale
foramen spinosum
foramen lacerum

Answer 2

f. r: maxillary n.
f. o: mandibular, accessory meningeal artery, lesser petrosal nerve.
f. s: middle meningeal artery and vein, meningeal branch of mandibular nerve
f. l: greater petrosal nerve, allows internal carotid to pass its posterior wall.

Question 3

where is the groove for middle meningeal artery?

Answer 3

middle cranial fossa

Question 4

where does external acoustic meatus lead to?

Answer 4

tympanic membrane

Question 5

lesser wing of sphenoid is in — whereas greater wing is in—

Answer 5

anterior cranial fossa, middle cranial fossa.

Question 6

—- overlies middle ear, and —- overlies inner ear in middle cranial fossa.

Answer 6

tegmun tympani

arcuate eminence.

Question 7

role of hamulus?

Answer 7

support for tendons of soft palate muscles

Question 8

scaphoid fossa is the feature of —–.

Answer 8

middle pterygoid plate.

Question 9

what attaches to pharyngeal tubercle?

Answer 9

pharyngeal constrictor muscles

Question 10

occipital condyle is the site of —— with —–.

Answer 10

articulation with atlas

Question 11

what passes through condylar canal?

Answer 11

emissary vein.

Question 12

facial nerve exits through —–.

Answer 12

stylomastoid foramen

Question 13

petrotympanic fissure houses —–.

Answer 13

chorda tympani

Question 14

palato pharyngeal canal is posterior to —–.

Answer 14

nasal septum

Question 15

pterygoid canal is posterior to —–.

Answer 15

medial pterygoid plate.

Question 16

spine of sphenoid is located between —– and —–.

Answer 16

foramen spinosum and carotid canal (ventral skull).

Question 17

foramen spinosum is posterior to ——- on ventral skull.

Answer 17

lateral pterygoid plate.

Question 18

ethmoid foramina are on the — side of orbit.

Answer 18

medial

Question 19

sphenoid sinus is beneath—–

Answer 19

hypophyseal fossa

Question 20

mylohyoid groove is for —-, whereas mylohyoid line is for —-.

Answer 20

mylohyoid nerve

mylohyoid muscle

Question 21

mandibular foramen passes—–.

Answer 21

inferior alveolar nerve branch of V3.

Question 22

mylohyoid nerve is branch of —–.

Answer 22

inferior alveolar nerve.

Question 23

sss is between — and — layers.

Answer 23

periosteal and meningeal layers.

Question 24

The floor of middle cranial fossa is —–, including medially the —- and —- laterally.

Answer 24

body of sphenoid
hypophyseal fossa
greater wings of sphenoid

Question 25

groove for middle meningeal artery is on —- of temporal bone. Impression of trigeminal ganglion may be visible on —– of temporal bone.

Answer 25

squamous

medial petrous

Question 26

organs of hearing and balance are in —- temporal bone.

Answer 26

posterior end of petrous

Question 27

arcuate eminence is a bump on —- bone, tegmun tympani is an indentation —– to arcuate eminence.

Answer 27

petrous bone

anterolateral

Question 28

internal acoustic meatus houses:

Answer 28

facial and vestibulo

Question 29

jugular foramen transmits:

Answer 29

glosso, vagus, accessory, internal jugular

Question 30

hamulus is the hook on anteroinferior —–.

Answer 30

medial plate of pterygoid

Question 31

superior and middle chonchae are part of —- bone, but inferior is —- bone.

Answer 31

ethmoid bone,

separate bone

Question 32

palatopharyngeal canal is —- to —–.

Answer 32

posterior to nasal septum

Question 33

groove for auditory tube on ventral skull is the impression of which part?

Answer 33

cartilaginous part of auditory tube

Question 34

foramen rotundum is not visible from —–aspect, because it opens into—-

Answer 34

inferior skull,

pterygopalatine fossa.

Question 35

—– ligament attaches to spine of sphenoid.

Answer 35

sphenomandibular ligament

Question 36

what nerve goes through superior orbital fissure?

Answer 36

opthalamic nerve branches; lacrimal, nasociliary,

also trochlear, abducens, occulomotor

Question 37

what nerve goes through inferior orbital fissure?

Answer 37

maxillary nerve from pterygopalatine fossa

Question 38

where do branches of opthalamic nerve go through in the orbit?

Answer 38

frontal-branches into supraorbital and supratrochlear
Lacrimal-to lacrimal gland
Nasociliary- to iris, ciliary body, also branches into anterior/pos ethmoidal nerves and becomes infratrochlear nerve.

Question 39

what nerve/branch passes through zygomatico-orbital foramen?

Answer 39

zygomatico-orbital branch of maxillary nerve.

Question 40

sphenoid emissary foramen is —– to —- foramen.

Answer 40

anteromedial to foramen ovale.

Question 41

paranasal sinuses open into—–.

Mastoid hair cells are not paranasal sinuses because they —-.

Answer 41

nasal cavity

do not open into nasal cavity

Question 42

mental foramina are on external surface below—–.

Answer 42

2nd premolars

Question 43

are the two layers of dura fused all the way?

Answer 43

no, on places where vessels e.g. dural sinuses, nerves e.g. peripheral trigeminal and its ganglion are located, AND where meningeal layer forms foldings

Question 44

dural sinuses —- valves.

Answer 44

lack

Question 45

sella diaphragm is continuous with —- of —-.

Answer 45

dura of middle cranial fossa

Question 46

state the foramina the following nerves pass through:
oculomotor
trochlear 
trigeminal
abducens
facial 
vestibulo
glosso
vagus 
accessory 
hypoglossal

Answer 46

3. superior orbital fissure (sof)
   4.sof
4. V1-SOF
   V2-foramen rotundum=>pterygopalatine fossa =>inferior orbital fissure=>orbit, branches exit orbit via zygomatico-orbital foramen & infraorbital canal.
   V3- foramen ovale
5. sof
6. internal acoustic m. to stylomastoid foramen. Chorda tympani emerges separately from petrotympanic fissure.
7. internal a.m.
8. jugular f.
9. j.f
10. j.f.
11. hypoglossal canal