Skull Week 1 Day 1 Pt. 2

Front 1

how many cranial bones

Back 1

8

Front 2

how many facial bones

Back 2

14

Front 3

bones of calvarium

Back 3

frontal, right parietal, left parietal, occipital

Front 4

bones of the base (floor)

Back 4

right temporal, left temporal, sphenoid, ethmoid

Front 5

forms the forehead and superior part of each orbit

Back 5

frontal bone

Front 6

2 parts of frontal bone

Back 6

squamous (vertical) portion and orbital (horizontal) portion

Front 7

part of frontal bone which forms the forehead

Back 7

squamous or vertical

Front 8

part of frontal bone which forms the superior part of the orbit

Back 8

orbital or horizontal

Front 9

smooth, raised prominence between the eyebrows just above the bridge of the nose

Back 9

glabella

Front 10

slight depression above each eyebrow

Back 10

supraorbital groove (SOG)

Front 11

ridge of bone beneath each eyebrow

Back 11

supercilliary ridge (arch)

Front 12

between the supercilliary arches

Back 12

glabella

Front 13

on each side of the squamous portion of the frontal bones above the supraorbital grooves is a larger rounded prominence termed what

Back 13

frontal tuberosity (eminence)

Front 14

parts of orbital (horizontal) portion of frontal bone

Back 14

supraorbital margins, superciliary ridges, glabella, frontal tuberosities

Front 15

each orbital plate is separated from each other by what

Back 15

ethmoidal notch

Front 16

where is the nasal spine found

Back 16

anterior end of the ethmoidal notch

Front 17

what 4 cranial bones do the frontal bones articulate with

Back 17

right parietal, left parietal, sphenoid, ethmoid

Front 18

what 8 facial bones do the frontal bones articulate with

Back 18

R. maxilla, L.maxilla, R. zygomatic, L. zygomatic, R. lacrimal, L. lacrimal, R. nasal, L. nasal

Front 19

highest point on the skull

Back 19

vertex

Front 20

form the lateral walls of the cranium and part of the roof

Back 20

two parietal bones

Front 21

shape of parietal bones

Back 21

roughly square with a concave internal surface

Front 22

where is the widest portion of the entire skull

Back 22

between the parietal tubercles (eminences) of the two parietal bones

Front 23

each parietal bone articulates with what 5 cranial bones

Back 23

frontal, occipital, temporal, sphenoid, the other parietal

Front 24

the inferoposterior portion of the calvarium is formed by what

Back 24

single occipital bone

Front 25

rounded part on the external surface of the occipital bone

Back 25

squamous portion

Front 26

other term for external occipital protuberance

Back 26

inion

Front 27

shallow depression that begins on the posteroinferior aspect of the dorsum sellae of the sphenoid bone and extends posteriorly to the foramen magnum at the base of the occipital bone

Back 27

clivus

Front 28

posterior to the sellica turcica; the back of the saddle

Back 28

dorsum sellae

Front 29

large opening at the base of the occipital bone through which the spinal cord passes

Back 29

foramen magnum

Front 30

two-part articulation between the skull and the cervical spine

Back 30

atlanto-occipital joint

Front 31

oval processes with convex surfaces, one on each side of the foramen magnum

Back 31

lateral occipital condyles

Front 32

the occipital articulates with what 6 bones

Back 32

L. parietal, R. parietal, L. temporal, R. temporal, sphenoid, atlas (C1)

Front 33

complex structures housing the delicate organs of hearing and balance

Back 33

two temporal bones

Front 34

between the greater wing of the sphenoid bone anteriorly and the occipital bone posteriorly

Back 34

temporal bone

Front 35

extending anteriorly from the squamous portion of the temporal bone is an arch of bone called what

Back 35

zygomatic process

Front 36

inferior to the zygomatic process and just anterior to the EAM (external auditory meatus)

Back 36

temporomandibular joint

Front 37

projecting inferior to the mandible and anterior to the EAM is a slender bony projection called what

Back 37

styloid process

Front 38

4 divisions of each temporal bone

Back 38

squamous, zygomatic, mastoid, petrous

Front 39

thin upper portion of the temporal bone that forms part of the wall of the skull

Back 39

squamous portion

Front 40

portion of the temporal bone posterior to the EAM

Back 40

mastoid portion

Front 41

dense portion of the temporal bone which house the organs of hearing and equilibrium

Back 41

petrous portion (petrous pyramid)

Front 42

upper border or ridge of the petrous pyramid

Back 42

petrous ridge

Front 43

thickest and most dense bone in the cranium

Back 43

pyramid-portion of temporal bone

Front 44

opening or oriface near the center of the petrous pyramid on the posterior surface just superior to the jugular foramen

Back 44

internal acoustic meatus

Front 45

nerves for hearing and equilibrium pass through what

Back 45

internal acoustic meatus

Front 46

what 3 cranial bones do the temporal bone articulate with

Back 46

parietal, occipital, sphenoid

Front 47

what 2 facial bones do the temporal bone articulate with

Back 47

right and left temporal