Cranial and Facial Bones W2 Flashcards
What are the orbits?
eye sockets
what is the nasal septum?
partition of nasal cavity
what are the nasal conchae?
also known as turbinates 3 scrolls of bone
what is the frons?
forehead
what is the occiput?
posterior point of skull
what is the vertex?
superior point of skull
what is the temporae?
temple
what is the calvaria?
skullcap
what are the cranial fossa?
anterior, medial, posterior cavities in the inside of the skull
what is the foramen magnum?
hole in base of skull for spinal cord, vertebral and spinal arteries to pass through
Identify which arrow belongs to which skull landmark.
- coronal suture
- lambdoidal suture
- a. occipitomastoidal suture b.external auditory meatus
- a. mastoid process b. styloid process
sagittal is in the midline
How many cranial bones are there are what is their function?
8 cranial bones - frontal, temporal x2, parietal x2, occipital, ethmoid, sphenoid
they protect the brain and are attachment points for membranes and muscles
how many facial bones are there and what is their function?
there are 14 facial bones - maxillae x2, mandible, zygomatic x2, nasal x2, palatine x2, lacrimal x2, comer, inferior nasal concha x2, and they form the framework of the face and are attachements for some facial muscles
What are the landmarks of the frontal bone?
supraorbital margin, squamous portion, zygomatic process
what are the landmarks of the temporal bones?
zygomatic process, mastoid process, mandibular fossa, styloid process, external auditory meatus, internal auditory meatus
image shows internal auditory meatus on left with L-shaped arrow
What are the landmarks for the occipital bone?
foramen magnum and occipital condyles
sphenoid bone
forms part of orbits forms anterior base of cranium
body of sphenoid
lesser wings and greater wings
cellaturcica superior saddle like
lateral and medial pterygoid laminae muscle attachments
hamulus hooklike projection for muscle to hook onto tensor veli palatini
identify the parts of the ethmoid bone.
ethmoid bone perpindicular plate forms part of nasal septum, crystigalli membrane dura matter attachment, cribriform plate separates nasal and brain cavities with holes for olfact nerves
middle and superior nasal conchae one on ant surface split towards post
what are the landmarks of the maxillae?
zygomatic process, frontal process, alveolar process - dental alveoli, intermaxillary suture, palatine process, inicisive foramen
identify the landmarks on the superior surface of the maxillae
identify the landmarks of the palatine bones
back of nasal cavity
identify the landmarks on the mandible
mental symphysis, mental protuberance, mental tubercles, body, ramus - coronoid process, condylar process, mandibular notch; alveolar process - dental alveoli; mylohyoid line
identify the landmarks of the zygomatic bones.
frontal temporal maxillary branches form bridge for chewing muscles to layer
identify the two processes of nasal bones
frontal and maxillary bridge of nose
what are the lacrimal bones?
medial orbital wall
smallest and fragile
joins with frontal and ethnoid
where is the vomer?
midsagital
where are the inferior nasal concha?
