Billy - Anatomy & Physiology - Axial Bone Lab

Front 1

frontal bone

Back 1

forehead bone extending from the superior eye sockets to the top of the skull

Front 2

external auditory meatus

Back 2

canal for the passage of sound vibrations through each temporal bone to the middle ear

Front 3

mastoid process

Back 3

the large blunt projections pointing inferiorly off the temporal bone

Front 4

styloid process

Back 4

the "needle-like" projections on the underside of the temporal bone

Front 5

mastoid sinus

Back 5

hollow area in the mastoid portion;
internal, and only visible on cut skulls

Front 6

occipital condyles

Back 6

the mostly lateral bumps around the foramen magnum

Front 7

maxilla

Back 7

the upper jaw bone
also extends upward to form part of the eye socket and nasal cavities
curves into the roof of the mouth

Front 8

alveoli

Back 8

small sacs for the roots of each tooth

Front 9

infraorbital foramen

Back 9

two small holes under each eye socket

Front 10

maxillary sinus

Back 10

located laterally within the maxilla

Front 11

palantine process

Back 11

the anterior 3/4 of the hard palate

Front 12

palantine

Back 12

small, separate bone that finishes the last 1/4 of the hard palate

Front 13

lacrimal

Back 13

small rectangular bones barely inside the medial portion of the eye socket.
surrounds lacrimal canals

Front 14

coronoid process

Back 14

the more pointed projections anterior to the condyloid process

Front 15

condyloid process

Back 15

aka madibular condyle
the blunt rounded processes that fit into the mandibular fossae

Front 16

ethmoid bone

Back 16

very irregular bone that forms the roof of the nasal cavity and a small part of the floor of the brain case

Front 17

crista galli

Back 17

small, "shark-fin like" projection in the middle of the cribriform plate
separates 2 olfactory bulbs which send nerve endings through the olfactory foramina

Front 18

perpendicular plate

Back 18

plate like bone making up the superior part of the nasal septum

Front 19

vomer

Back 19

plate like bone making up the inferior part of the bony nasal septum

Front 20

inferior concha

Back 20

paired, curvy, feathery bones inside the nasal cavity

Front 21

sphenoid bone

Back 21

"bat" or "butterfly" shaped bone that extends through the skull behind the eyes from temple to temple

Front 22

sella turcica

Back 22

small depression on the back of the butterfly in which the pituitary gland is found

Front 23

pterygoid process

Back 23

"legs" of the butterfly that extend to the maxilla/palantine bones

Front 24

ear ossicles

Back 24

tiny, specialized bones found between the auditory meatus and the mastoid sinus
malleus: hammer
incus: anvil
stapes: stirrup

Front 25

lamina

Back 25

slender connection between transverse and spinous processes in vertebrae

Front 26

sternum

Back 26

long flat bone in the middle anterior thoracic region
3 parts: manubrium: the almost square top portion, body: the long middle portion, and the xiphoid process: the small, sharp, inferior portion