Axial

Front 1

The Skull

Back 1

22 bones; 8 paired, 6 unpaired

Front 2

Frontal Bone

Back 2

contains frontal sinuses;

superior margin at the orbit & anterior/superior aspect of cranial cavity;

unpaired

Front 3

Parietal Bones

Back 3

from the superior and lateral aspects of the cranial cavity;

paired;

held together by the sagittal suture

Front 4

Temporal Bones

Back 4

help form the floor of the cranial cavity;

paired;

Front 5

Zygomatic Process

Back 5

articulates with the temporal process of the zygomatic bone; helps from the zygomatic arch (Temporal bones)

Front 6

Styloid Process

Back 6

anchors various muscles and ligaments (Temporal bone)

Front 7

Mastoid Process

Back 7

prominent lump behind the ear which can be palpated; anchors various muscles (Temporal bone)

Front 8

Eternal Acoustic Meatus

Back 8

opening on the lateral aspect which funnels sound waves (temporal bone)

Front 9

Interanal Acoustic Meatus

Back 9

passageway from the bony labyrinth of the inner ear to the cranial vault (temporal bone)

Front 10

Occipital Bone

Back 10

forms the base of the skull

unpaired

Front 11

Occipital Condyles

Back 11

articulate with the lateral mass of the Atlas (C1); (Occipital Bone)

Front 12

Foramen Magnum

Back 12

allows the brainstem/spinal cord to exit the skull (Occipital bone)

Front 13

Sphenoid Bone

Back 13

helps form the posterior margin of the orbit and floor of the cranial cavity

unpaired

contains the sphenoid sinus

Front 14

Sella Turcica

Back 14

contains a deep pit called the hypophyseal fossa, which house the hypophosis (pituitary gland) (Spenoid bone)

Front 15

Ethmoid Bone

Back 15

helps from the medial walls of the orbit; the roots/walls of the nasal cavity, and the superior part of nasal septum

unpaired

Front 16

Cribriform Plate

Back 16

forms the root of the nasal cavity allowing various olfactory nerves to pass through (Ethmoid Bone)

Front 17

Crista Galli

Back 17

small crest that anchors protective layer of the brain (Cribriform Plate in Ethmoid Bone)

Front 18

Palatine Bones

Back 18

forms the posterior 1/3 of the palate; helps form the nasal cavity; forms a small section of the posterior floor of the orbit

Paired

Front 19

Zygomatic Bones

Back 19

cheek bones; paired

forms the lateral aspect and help form the floor of the orbit

Front 20

Temporal Process

Back 20

articulates with the zygomatic process of the temporal bone; helps from the zygomatic arch (Zygomatic Bones)

Front 21

Lacrimal Bones

Back 21

helps form the medial wall of the orbit

smallest bone in the skull with the exception of the ossicus

paired

Front 22

Fossa for Lacrimal Sac

Back 22

houses the lacrimal sac

Front 23

Nasal Bone

Back 23

small rectangular bone which forms the bridge of the nose & supports the cartilage that shape its lower portion

paired

Front 24

Inferior Nasal Concha

Back 24

largest of the nasal concha

paired

not a part of the ethmoid bone, unlike the middle and superior

Front 25

Vomer

Back 25

forms the interior part of the nasal septum

unpaired

resembles the blade of a plow

Front 26

Mandible

Back 26

supports the lower teeth & provides attachment points for muscles of mastication (Chewing)

unpaired (TEETH ARE NOT BONES)

Front 27

Mandibular Condyle

Back 27

oval knobs that articulate with the temporal bone (Mandible)

Front 28

Maxillae

Back 28

forms the interomedial part of the oribit; house the roots of the upper teeth, from the anterior 2/3 of palate

paired

helps form the orbit, nasal and oral cavity

Front 29

Sutures

Back 29

Sutures

Front 30

Cornal suture

Back 30

joins frontal and parietal bones

Front 31

Sagittal

Back 31

joining parietal bones

Front 32

Lambdoid

Back 32

occipital and parietal

Front 33

Foramen of the Skull

Back 33

Foramen of the Skull

Front 34

Foramen Magnum

Back 34

allows the spinal cord to exit the skull

located in the occipital bone

Front 35

Optic Canal

Back 35

allows passage of nerves responsible for vision

located in the sphenoid bone

Front 36

Internal Acoustic Meatus

Back 36

allows passage of nerves responsible for hearing and balance

located in the temporal bone

Front 37

Cartoid Canal

Back 37

allows passage of internal cartoid arteries

located in temporal bone

Front 38

Jugular Foramen

Back 38

allows passage of internal jugular veins

located in temporal-occipital region

Front 39

Orbit, Cranial, Nasal, Oral (Buccal) Cavities

Back 39

4 Cavities associated with the Cephalic region

Front 40

Hyoid Bone

Back 40

free floating bone in neck; anchored to larynx & attached to muscles which elevate/depress