Bones, Joints and Foramina of the skull

Question 1

Name the bones of the skull, Anterirorly to Posteriorly

Answer 1

Mandible

Maxilla

Nasal

Frontal

Zygomatic

Ethmoid

Sphenoid

Temporal

Parietal

Occipital

Question 2

Name the Bones of the skull, Medially to Laterally

Answer 2

Nasal, Frontal, Parietal, Occipital, Maxilla, Mandible

Ethmoid

Sphenoid

Zygomatic

Temporal

Question 3

Where do the 2 Parietal bones meet

Answer 3

At the Sagital suture

Question 4

Where do the Parietal bones meet the Occipital bone

Answer 4

At the Lamboid Suture

Question 5

What does the Optic canal/Optic Foramen transmit

Answer 5

Optic Nerve

Opthalmic Artery

Question 6

What is the most important structure transmitted by the inferior orbital fissure

Answer 6

Maxillary nerve - Branch of the CN V the Trigeminal nerve

Question 7

What Fossa Does the superor orbital fissure communicate with

Answer 7

Middle cranial fossa

Question 8

What does the Superior orbital fissure transmit

Answer 8

Occulomotor nerve - CN II

Trochlear nerve - CN IV

Abducent nerve - CN VI

Terminal branches of the Opthalmic nerve

Opthalmic Veins

Question 9

What does the foramen ovale tansmit

Answer 9

Mandibular division of the trigeminal nerve

Question 10

What is the relation of the foramen spinosum to the foramen ovale

Answer 10

Foramen spinosum is posteror and slightly lateral to foramen ovale

Question 11

what does the foramen spinosum transmit

Answer 11

Middle menigeal artery to the middle cranial fossa

Question 12

What does the foramen rotundum conduct

Answer 12

Maxillary nerve into the pterygopalatine fossa

Question 13

What does the foramen lacerum transmit

Answer 13

Internal carotid artery

Question 14

What does the foramen magnum transmit

Answer 14

Vertebral Arteries

Medulla oblongata as it becomes continuous with the spinal cord

Question 15

What does the jugular foramen transmit

Answer 15

Sigmoid sinus (which is continuous below with IJV)

Accessory nerve - CN XI

Vagus nerve - CN X

Glossopharyngeal - CN IX

Question 16

What does the hypoglossal canal transmit

Answer 16

Hypoglossal nerve - CN XII

Question 17

What does the internal acoustic meatus transmit

Answer 17

Vestibulocochlear nerve - CN VIII

Motor & Sensory roots of facial nerve

Labyrinthine Vessels

Question 18

What does the Facial Canal transmit

Answer 18

Facial nerve through petrous temporal bone to stylomastoid foramen

Question 19

What does the stylomastoid foramen transmit

Answer 19

Facial nerve

Stylomastoid Artery

Question 20

What is the main foramina in the anterior cranial fossa

Answer 20

Cribiform plate

Question 21

What are the foramina in the middle cranial fossa that communicate witht the orbit

Answer 21

Superior orbital fissure

Optic canal

Question 22

What is lateral to the foramen rotundum

Answer 22

Foramen ovale

Question 23

What is posterior to the foramen ovale

Answer 23

Foramen spinosum

Question 24

What opens into the side wall of the foramen lacerum

Answer 24

Carotid canal - the pathway for the internal carotid artery

Question 25

What bone is the internal acoustic meatus in

Answer 25

Petrous part of the temporal bone

Question 26

What nerves enter the internal acoustic meatus

Answer 26

Vesibulocochlear Nerve - CN VIII Facial Nerve - CN VII

Question 27

How do bones at the base of the skull and auditory ossicals develop

Answer 27

Endochondral ossification

Question 28

What forms the Zygomatic arch

Answer 28

The union of the temporal process of the zygomatic bone with the zygomatic process of the temporal bone.

Question 29

What are fibrous joints united with

Answer 29

Fibrous tissue

Question 30

What is a syndemosis

Answer 30

Type of Fibrous joint where the bones are united with a sheet of fibrous tissue, this join is particularly movable

Question 31

Where are the 2 synovial joints of the skull

Answer 31

Between the mandible and the temporal bone Between the 3 ear ossicals withing the middle ear

Question 32

Which bones make up the cranium

Answer 32

Frontal Temporal (2) Parietal (2) Occipital Sphenoid Ethmoid

Question 33

What bones contain sinuses

Answer 33

Frontal Ethmoid Sphenoid Maxilla

Question 34

Where are the air sacs in the skull

Answer 34

Mastoid processes

Question 35

What typof joint is the Atlanto-occipital joint

Answer 35

Synovial ellipsoid joint