Temporal Bone

Question 1

Where is the parietal margin

Answer 1

Along the top of the squamous part

Question 2

Where is the sphenoidal margin

Answer 2

Under the zygomatic ridge where it would fuse with the sphenoid bone

Question 3

Where is the occipital margin

Answer 3

Posterior to the auditory meatus

Question 4

Where is the petrous part

Answer 4

Protuberance in the medial view

Question 5

Where is the petrous crest

Answer 5

Notch above the petrous part before the sphenoidal margin

Question 6

Where is the external acoustic meatus

Answer 6

Big hole in the exocranial view next to mastoid

Question 7

Where is the zygomatic process

Answer 7

This projection of bone which begins to form the zygomatic arch

Question 8

Where is the suprameatal crest

Answer 8

Superior roof of the zygomatic process

Question 9

Where is the supramastoid crest

Answer 9

This is the posterior extension of the suprameatal crest past the EAM

Question 10

Where is the parietal notch

Answer 10

This is formed in-between the parietal and occipital margin

Question 11

Where is the mastoid process

Answer 11

The rough external surface posterior to the EAM

Question 12

Where are the mastoid foramen

Answer 12

Located near the posterior edge on the exocranial side

Question 13

Where is the mastoid notch

Answer 13

This is a furrow medial to the mastoid process

Question 14

Where is the occipital groove

Answer 14

Medial to the mastoid notch is a shallow furrow for the occipital artery - smaller than the notch

Question 15

Which is the squamous part

Answer 15

Big flat area of bone

Question 16

Where is the articular eminence

Answer 16

Under the zygomatic arch flat surface next to the mandibular fossa

Question 17

Where is the mandibular fossa

Answer 17

Fossa next to the articular eminence, fairly big next to EAM

Question 18

Where is the postglenoid process

Answer 18

Small projection under the EAM near to the styloid process

Question 19

Where is the entoglenoid process

Answer 19

This is the inferior projection of the articular surface at the medial edge of the articular eminence

Question 20

Where is the tympanic part

Answer 20

This is the anterior surface which forms the rear wall of the mandibular fossa

Question 21

Where is the styloid process

Answer 21

This is the thin pointed bony rod that points from the base of the temporal bone - usually broken or missing

Question 22

Where is the stylomastoid foramen

Answer 22

Located posterior to the base of the styloid process

Question 23

Where is the vaginal process

Answer 23

Ensheaths the base of the styloid process

Question 24

Where is the jugular fossa

Answer 24

Located medial to the base of the styloid process - big

Question 25

Where is the carotid canal

Answer 25

A large circular canal, medial to the styloid process next to the jugular fossa

Question 26

Where are the middle meningeal grooves

Answer 26

Narrow well defined grooves on the endrocranial surface

Question 27

Where is the internal auditory meatus

Answer 27

Located midway along the petrous part

Question 28

Where is the sigmoid sulcus

Answer 28

Large curving groove at the posterior base of the petrous part

Question 29

Where is the squamotympanic fissure

Answer 29

Under the mandibular fossa

Question 30

Where is the sub arcuate fossa

Answer 30

This is the small hole next to the internal auditory meatus

Question 31

Where is the opening for the aequeductos vestibuli

Answer 31

It is the ‘fold’ of bone along from the internal auditory meatus

Question 32

Where is the groove for the sigmoid sinus

Answer 32

This is superior to the petrous part on the side of the occipital margin

Question 33

Where is the tymponomastoid fissure

Answer 33

Runs under the EAM, in-between the styloid process and mastoid process

Question 34

Where is the articular tubercle

Answer 34

This is the small bump before the zygomatic arch

Question 35

How would you side the temporal bone

Answer 35

The mastoid tip is inferior, the zygomatic arch projects anteriorly, the parietal margin is superior