Bones Of The Head (cranial & facial)

Question 1

large membranous and unossified gaps between the bones of the skull, in the fetus and newborn

Answer 1

Fontanelles

Question 2

The cranium serves to

Answer 2

Enclose brain

Provide attachment sites for some head and neck muscles

Question 3

Cranium is divided into

Answer 3

cranial vault

base

Question 4

The skull contains smaller cavities

Answer 4

Middle and inner ear cavities
Nasal cavity
Orbits
Air-filled sinuses

Question 5

Paired cranial bones

Answer 5

Parietal

Temporal

Question 6

Unpaired cranial bones

Answer 6

Frontal
Occipital
Sphenoid
Ethmoid

Question 7

Forms superciliary arches

Answer 7

Frontal bones

Question 8

Internally, it contributes to the anterior cranial fossa

Answer 8

Frontal bones

Question 9

Articulates posteriorly with the parietal bones via the coronal suture

Answer 9

Frontal bones

Question 10

Major markings of the frontal bones

Answer 10

• supraorbital margins
• anterior cranial fossa
• frontal sinuses (internal and lateral to the glabella)

Question 11

Form most of the superior and lateral aspects of the skull

Answer 11

Parietal bones

Question 12

Four sutures mark the articulations of the parietal bones

Answer 12

Coronal
Squamous
Sagittal
Lambdoid

Question 13

located where parietal bones meet the frontal bone

Answer 13

Coronal suture

Question 14

where each parietal bone meets a temporal bone inferiorly

Answer 14

Squamous suture

Question 15

where right and left parietal bones meet superiorly

Answer 15

Sagittal suture

Question 16

where the parietal bones meet the occipital bone posteriorly

Answer 16

Lambdoid suture

Question 17

Forms the posterior portion of the cranium and cranial base

Answer 17

Occipital bone

Question 18

Articulates with the temporal bones and parietal bones

Answer 18

Occipital bone

Question 19

Forms the posterior cranial fossa;

Foramen magnum located at its base

Answer 19

Occipital bone

Question 20

These structures pass thru the foramen magnum

Answer 20

 Brainstem
 CN XI
 Vertebral Arteries
 Meninges

Question 21

CN XII passes here

Answer 21

Hypoglossal canal

Question 22

features and structures of the occipital bone

Answer 22

Occipital condyles
Hypoglossal canal
External occipital protuberance
Superior nuchal lines
Inferior nuchal lines

Question 23

Lie inferior to parietal bones; Lie inferior to parietal bones

Answer 23

Temporal bones

Question 24

Specific regions of temporal bone

Answer 24

squamous
temporal
petrous
mastoid

Question 25

CNs VII &VIII

Answer 25

Internal auditory meatus

Question 26

Major markings of the temporal bones

Answer 26

``` zygomatic process styloid process mastoid process mandibular fossa middle cranial fossa internal auditory meatus  external auditory meatus ```

Question 27

Spans the width of the middle cranial fossa

Answer 27

Sphenoid bone

Question 28

Forms the central wedge that articulates with all other cranial bones

Answer 28

Sphenoid bone

Question 29

The sphenoid bone consists of

Answer 29

* central body * greater wings * lesser wings * pterygoid processes

Question 30

Major markings of the sphenoid bone

Answer 30

* sella turcica * hypophyseal fossa * pterygoid processes

Question 31

Major openings of the sphenoid bone

Answer 31

superior orbital fissure - CNs III, IV, V1, VI & Ophthalmic Veins foramina rotundum - CN V2 foramina ovale - CN V3 foramina spinosum - Middle Meningeal Artery optic canal - CN II

Question 32

CNs III, IV, V1, VI & Ophthalmic Veins

Answer 32

Superior orbital fissure

Question 33

CN V2

Answer 33

foramina rotundum

Question 34

CN V3

Answer 34

foramina ovale

Question 35

Middle meningeal artery

Answer 35

foramina spinosum

Question 36

CN II

Answer 36

optic canal

Question 37

Deepest of the skull bones; Lies between nasal and sphenoid | bones

Answer 37

Ethmoid bone

Question 38

Forms most of the medial bony region between the nasal cavity and orbits; olfactory foramina

Answer 38

Ethmoid bone

Question 39

CN I

Answer 39

Olfactory foramina

Question 40

Major markings of the ethmoid bone

Answer 40

* cribriform plate * crista galli * perpendicular plate * nasal conchae * ethmoid sinuses

Question 41

Unpaired facial bones

Answer 41

vomer | mandible

Question 42

Paired facial bones

Answer 42

``` maxillae zygomatics nasals lacrimals palatines inferior conchae ```

Question 43

the largest and strongest facial bone

Answer 43

Mandible

Question 44

Two main parts of the mandible

Answer 44

Horizontal body | Two upright rami

Question 45

2 groups:

Answer 45

1. Cranial bones | 2. Facial bones

Question 90

Major markings of the mandible

Answer 90

coronoid process mandibular condyle alveolar margin mandibular foramina mental foramina

Question 91

Medially fused bones that make up the upper jaw and the central portion of the facial skeleton

Answer 91

Maxillary bones

Question 92

Articulate with all other facial bones except the mandible

Answer 92

Maxillary bones

Question 93

largest paranasal sinuses

Answer 93

maxillary sinuses

Question 94

Forms part of the inferior orbital fissure

Answer 94

Maxillary bone

Question 95

Major markings of the maxillary bones

Answer 95

* palatine process * frontal process * zygomatic processes * alveolar margins * inferior orbital fissure * maxillary sinuses

Question 96

Irregularly shaped bones that form the prominences of the cheeks and the inferolateral margins of the orbits

Answer 96

Zygomatic bones

Question 97

thin medially fused bones that form the bridge of the nose

Answer 97

Nasal bones

Question 98

contribute to the medial walls of the orbit and contain a deep groove called the lacrimal fossa that houses the lacrimal sac

Answer 98

lacrimal bones

Question 99

two bone plates that form portions of the hard palate, the posterolateral walls of the nasal cavity, and a small part of the orbits

Answer 99

Palatine bones

Question 100

forms the inferior part of the nasal septum

Answer 100

vomer

Question 101

Thin, curved bones that project medially to form the lateral walls of the nasal cavity

Answer 101

inferior nasal conchae