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33 terms

Axial Skeleton Skull

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forehead bone
frontal
cheekbone
zygomatic
lower jaw
mandible
bridge of nose
nasals
posterior part of hard palate
palatines
much of the lateral and superior cranium
parietals
most posterior part of cranium
occipital
single, irregular, bat-shaped bone, forming part of the cranial floor
sphenoid
tiny bones, bearing tear ducts
lacrimals
anterior part of hard palate
maxillae
superior and middle nasal conchae formed from its projections
ethmoid
site of mastoid process
temporals
site of sella turcia
temporals
site of cribriform plate
ethmoid
site of mental foramen
mandible
site of styloid process
temporals
four bones, containing paranasal sinuses
ethmoid, frontal, maxiallae, sphenoid
its condyles articulate with the atlas
occipital
foramen magnum contained here
occipital
middle ear found here
temporals
nasal septum
vomer
bears an upward protrusion, the "cock's comb," or crista galli
ethmoid
site of external acoustic meatus
temporals
When a bone forms from a fibrous membrane, the process is called______ossification.
membranous
when trapped in lacunae, osteoblasts change into_______.
osteocytes
Large numbers of______ are found in the inner periosteum layer.
Osteoblasts
_______ossification centers appear in the epiphyses of a long bone.
secondary
Epiphyseal plates are made of ________.
hyaline-cartilage
In appositional growth, bone reabsorption occurs on the ____surface.
endosteal
"Maturation" of newly formed (noncalcified) bone matrix takes about_____.
10 days.
What are sinuse?
Mucosa-lined, air-filled cavities in bone
What purpose do sinuse serve in the skull?
They lighten the skull and serve as resonance chambers for speech.
Why are sinuses so susceptible to infection?
Their mucosa is continuous with that of the nasal passages into which they drain.