Skull Osteology

Question 1

Contents of internal acoustic meatus?

Answer 1

Facial Vll

Vestibuloochlear Vlll

Question 2

Contents of superior orbital fissure?

Answer 2

Oculomoter lll
Trochlear IV
Opthalmic V1
Abducens VI

Question 3

Contents of jugular foramen?

Answer 3

• petrous part of temporal bone
• Glosopharyngeal IX
• Vagus X
• Spinal accessory Xl
• IJV

Question 4

Contents & cranial bone of crista gali? (make sure to check)

Answer 4

Olfactory l

Question 5

Contents & cranial bone of foramen spinosum?

Answer 5

meningeal br. of manidbular n. (V/3)

middle meningeal a.

Question 6

Contents & cranial bone of hypoglossal canal?

Answer 6

Hypoglossal Xll

Question 7

Contents & cranial bone of condylar canal?

Answer 7

• emissary vein that passes from sigmoid sinus to vertebral veins in neck
• ascending pharyngeal a.

Question 8

Contents & cranial bone of mastoid foramina?

Answer 8

-mastoid emissary vein from sigmoid sinus and miningeal branch of occipital a.

Question 9

Contents & cranial bone of foramen magnum?

Answer 9

medulla and meninges
vertebral a.
spinal accessory Xl

Question 10

Contents & cranial bone of groove or hiatus of greater petrosal nerve?

Answer 10

greater petrosal nerve and petrosal branch of middle meningeal a.

Question 11

Contents & cranial bone of incisive foramen?

Answer 11

• nasopalatine n.

- spenopalatine a.

Question 12

Contents & cranial bone of mandibular foramen?

Answer 12

inferior alveolar n. (branch of mandibular/V3)

Question 13

Muscle attachments of superior nuchal line?

Answer 13

Occipitalils
Splenius capitis
Traps
SCM

Question 14

Muscle attachments of inferior nuchal line?

Answer 14

Semispinalis capitis insertion

Question 15

Contents & cranial bone of external acoustic meatus?

Answer 15

on tympanic part of temporal bone
Facial Vll
Vestibulocochlear Vlll

Question 16

What is attached to the external occipital crest?

Answer 16

nuchal ligament

Question 17

Contents & cranial bone of greater and lesser palatine foramina?

Answer 17

Palatine

Greater and Lesser palatine n and vessels.

Question 18

Contents & cranial bone of foramen ovale?

Answer 18

• Sphenoid bone
• Mandibular V/3
• acessory meningeal a.
• lesser petrosal n.

Question 19

Contents & cranial bone of foramen lacerum?

Answer 19

no vessels

Question 20

Contents & cranial bone of carotid canal?

Answer 20

internal carotid a.

internal carotid nerve plexus (contains sympathetic n. fibers)

Question 21

Contents & cranial bone of inferior orbital fissure?

Answer 21

• Maxillary (V/ll)

- Zygomatic n.

Question 22

Contents & cranial bone of petrotympanic fissure?

Answer 22

petrous part of temporal bone
-chorda tympani (br. of CN Vll)
anterior tympanic a.

Question 23

What structures do the body of the sphenoid bone form?

Answer 23

Sella turcia- houses pituitary gland

• nasal body
• medial wall of optic canal
• hypophyseal fossa
• spenoidal sinus
• Dorsum sellae
• Tuberculum sellae

Question 24

Anterior Clinoid process forms an attachment for what?

Answer 24

Tentorium cerebelli

Question 25

Jugum sphenoidale?

Answer 25

between the lesser wings of sphenoid bone

Question 26

Cranial bone of Clivus?

Answer 26

Occipital

Question 27

Cribiform plate forms ______ of _______, and contains small foramina though which _______ pass through?

Answer 27

roof of nasal cavity

olfactory fibers

Question 28

Define cribiform?

Answer 28

“perforated”

Question 29

Parts of occipital bone?

Answer 29

Basilar part
Two condlyar parts
Squamous part

Question 30

Cerebellar fossa houses what structure?

Answer 30

cerebellum

Question 31

Name the cranial fossas?

Answer 31

Anterior cranial fossa- frontal lobe
Middle cranial Fossa- temporal lobe
Posterior cranial fossa- brainstem and cerebellum

Question 32

Name the structure in middle cranial fossa?

Answer 32

Temporal lone

Question 33

Contents & cranial bone of foramen cecum?

Answer 33

emissary vein

Question 34

Contents & cranial bone of foramen rotundum?

Answer 34

-sphenoid
Maxillary n (V/2)

Question 35

Contents & cranial bone of optic canal?

Answer 35

• sphenoid bone
• optic n.
• opthalmic a.