Axial Skeleton Skull
bridge of nose
posterior part of hard palate
much of the lateral and superior cranium
most posterior part of cranium
single, irregular, bat-shaped bone, forming part of the cranial floor
tiny bones, bearing tear ducts
anterior part of hard palate
superior and middle nasal conchae formed from its projections
site of mastoid process
site of sella turcia
site of cribriform plate
site of mental foramen
site of styloid process
four bones, containing paranasal sinuses
ethmoid, frontal, maxiallae, sphenoid
its condyles articulate with the atlas
foramen magnum contained here
middle ear found here
bears an upward protrusion, the "cock's comb," or crista galli
site of external acoustic meatus
When a bone forms from a fibrous membrane, the process is called______ossification.
when trapped in lacunae, osteoblasts change into_______.
Large numbers of______ are found in the inner periosteum layer.
_______ossification centers appear in the epiphyses of a long bone.
Epiphyseal plates are made of ________.
In appositional growth, bone reabsorption occurs on the ____surface.
"Maturation" of newly formed (noncalcified) bone matrix takes about_____.
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.