Articulation Cranial Skeleton

braincase; houses and protects the brain

braincase; houses and protects the brain

cranium

bowl that comprises skullcap

calvaria

Number of bones in cranial skeleton

8

core of skull and face

ethmoid bone

lie over lobes of the brain with the same names

frontal, parietal, temporal, and occipital bones

located within the braincase

sphenoid bone

if the skull is an apple, the __ is the core

ethmoid

separates cranial from nasal cavities

cribiform plate

joins with frontal and nasal bones, cartilaginous septum of nose, and anterior margin of vomer; directed vertically downward

perpendicular plate

another term for crista galli

cocks comb

bat shaped bone

sphenoid bone

frontal lobe is sharply divided into these two major portions

squamous and orbital portion

large, roughly square in shape

parietal bone

posterior and inferior part of the cranium; easily palpable at the back of your head

occipital bone

includes the entire ear (EAM, ME, IE), mastoid process, and zygomatic process

temporal bone

where occipital bone joins mastoid process of temporal bone

occiptomastoid

potential resonators, reduce weight of skull in comparison to other bones

the sinuses

paired, shallow sinuses above the orbits, behind the superciliary arch

frontal sinus

paired, lateral to the nasal passage very large

maxilary sinus

very complex in shape; make up the ethmodial labyrinth; superior and lateral to the nasal passage

ethmoid sinus

posterior and superior to the nasal cavity in the body of the sphenoid

sphenoid sinus