The Skull

Question 1

The skeleton of the head is called what?

Answer 1

The skull

Question 2

What is the cranium? What does it consist of?

Answer 2

Part of skull that contains brain (often used interchangeably with skull)

Consist of frontal, occipital, sphenoid, ethmoid, temporal and parietal bones

Question 3

The dome like superior portion of the cranium is the _______ (part they remove for autopsies)

Answer 3

Calvaria

Question 4

The bones that make up the face are known as _______. How many are there?

Answer 4

Facial skeleton (facial bones). 14.

Question 5

The line of Union in an immovable articulation

Answer 5

Suture

Question 6

What is the U shaped bone that forms the skeleton of the lower jaw and the inferior part of the face?

The largest and strongest facial bone

Answer 6

The mandible

Question 7

Landmarks on mandible:

1) ‘Crown’
2) indentation posterior to coronoid process (ditch)
3) Condyle on posterior

Answer 7

Coronoid process
Mandibular notch
Head

Question 8

4) Narrowing
5) arm like branch - vertical portion
6) horizontal portion

Answer 8

Neck
Ramus
Body (of the mandible)

Question 9

7) where Ramus and body meet
8) bottom of mandible
9) mental nerves pass through
10) protuberance on chin

Answer 9

Angle (of the mandible)
Base
Mental foramen
Mental protuberance

Question 10

11) pointed tooth of bone that overlaps mandibular foramen
12) chin fossa
…

Roughened area on inner aspect of angle of mandible

Answer 10

Lingula
Mandibular foramen
Mandibular canal
Digastric fossa
Mylohyoid line
Pterygoid tuberosity

Question 11

The frontal bone:

1) Bony ridge above eye socket
2) hairless, slightly rounded projection
3) above eye sockets
4) the frontal bone forms the roof of the eye sockets

Answer 11

The frontal bone

1) superciliary arch
2) glabella
3) supraorbital foramen
4) orbital surface

Question 12

The parietal bones

Lies in temporal fossa, attachment for

1) temporalis fascia
2) temporalis muscle

Answer 12

1) superior temporal line

2) inferior temporal line

Question 13

Where does the head of the mandible sit when the jaw is at rest ?

Answer 13

Mandibular fossa on temporal bone

Question 14

Which part of the temporal bone is involved in the proper mechanics of TMJ?

Answer 14

Articular tubercle on temporal bone

Question 15

Within the temporal bone is a cavity called ______

Which houses the 3 _________ (bones is the middle ear). Called what?

Answer 15

Tympanic cavity

Ossicles

Malleus, incus, stapes

Question 16

The bony passageway from internal to external ear

Answer 16

External acoustic meatus

Question 17

On the temporal bones which babies don’t have

Answer 17

Mastoid process

Question 18

Which bone houses structures related to hearing and balance?

Answer 18

Temporal

Question 19

Which muscles attaches on to the styloid process of the temporal bone?

Answer 19

Stylohyoid bone

Question 20

Which bone is wedge shaped and anterior to temporal bones?

Answer 20

Sphenoid bone

Question 21

Which gland is housed is the sella turcica?

Answer 21

Pituitary gland

Question 22

Which portion of the sphenoid muscle has a lateral and medial plate?

Answer 22

Pterygoid process

Question 23

How many bones does sphenoid articulate with ?

Answer 23

8

Question 24

Which bone forms the base of the skull?

Answer 24

Occipital bone

Question 25

Where does the nuchal ligament attach on the skull?

Answer 25

External occipital protuberance (inion)

Question 26

What is the hole at the base of the skull called?

Answer 26

Foramen magnum

Question 27

Lateral masses of C1 articulate with what to form Atlanto-occipital joint?

Answer 27

Occipital condyles

Question 28

What attaches to superior nuchal line?

Answer 28

Upper trap fibres, splenius capitis attaches

Question 29

What attaches to inferior nuchal line?

Answer 29

Rectus capitis posterior major and minor | Can't palpate

Question 30

Nasal bones have one landmark...

Answer 30

Bridge of nose - has suture down the centre

Question 31

Which bone makes up the majority of the roof of the mouth?

Answer 31

The Maxillae

Question 32

Part of maxillae that articulates with zygomatic bone...

Answer 32

Zygomatic process

Question 33

On the maxillae what is the floor of the eye sockets called?

Answer 33

Orbital surface

Question 34

On the maxillae, forms socket for top teeth

Answer 34

Alveolar processes

Question 35

Infraorbital nerve exits where on which bone?

Answer 35

Infraorbital foramen on maxillae

Question 36

The cheek bones are called?

Answer 36

Zygomatic bones

Question 37

Portion on zygomatic bone that surrounds eye socket

Answer 37

Anterolateral and infra orbital margins

Question 38

Bone that separates the nasal cavity from the brain. | Deep in skull - has lots of holes

Answer 38

Ethmoid bone

Question 39

Ridge of bone (on ethmoid) that projects superiorly

Answer 39

Crista galli

Question 40

Crista galli is attachment place for what?

Answer 40

Falx cerebri

Question 41

What is the falx cerebri?

Answer 41

Arched fold of dura mater that descends vertically in the longitudinal fissure between the right and left hemispheres of the brain

Question 42

Passageway of olfactory nerves (holes on either side of crista galli)

Answer 42

Cribriform plate, ethmoid bone

Question 43

Forms the posterior and superior part of the nasal septum

Answer 43

Perpendicular plate

Question 44

Coronal suture Sagital suture Squamous suture Lambdoid suture

Answer 44

Suture between frontal and parietal bones Suture between parietal bones Joint between parietal and temporal bones Joint between temporal, occipital and parietal bones

Question 45

What is the meeting point between the coronal and Sagital suture called? What is it called in babies?

Answer 45

Bregma | Anterior Fontanelle in babies

Question 46

What is the meeting point between the lambdoid and Sagital sutures?

Answer 46

Lambda

Question 47

What is the connection between the sphenoid, temporal, frontal and parietal bones called? Weakest point

Answer 47

Pterion

Question 48

What is the orbit?

Answer 48

Eye socket - cone shaped cavity made of many bones. | Optic canal

Question 49

``` What forms the eye sockets: Roof Posterolateral wall Posteromedial wall Lateral wall Floor ```

Answer 49

``` Roof= Frontal bone Posterolateral wall = sphenoid bone Posteromedial wall = ethmoid bone Lateral wall = zygomatic bone Floor = maxilla ```

Question 50

What are sinuses?

Answer 50

Air filled extensions of nasal cavity | Lightens the skull, adds tone to voice, can house infections but are meant to protect against

Question 51

How many sinuses are there?

Answer 51

Frontal (2) Sphenoidal (2) Ethmoidal (2) Maxillary (2)

Question 52

Which of the sinuses is largest?

Answer 52

Maxillary