Head and Neck Flashcards
what are the two classes of the bones of the head
cranial bones
facial bones
what are the cranial bones
ethmoid
frontal
occipital
parietal
sphenoid
temperol
how many ethmoid bones
one
how many frontal bones
one
how many occipital bones
one
how many parietal bones
two
how many sphenoid bones
one
how many temperol bones
two
what are the facial bones
lacrimal
maxilla
nasal
inferior concha
palatine
vomer
zygoma
mandible
how many lacrimal bones
two
how many maxilla bones
two
how many nasal bones
two
how many inferior conchae
two
how many palatine bones
two
how many vomer bones
one
how many zygoma bones
two
what are the malar bones
the zygoma bones
how many mandible bones
one
what are the two major functions of the skull
protection of the brain and supporting the facial structure
what are the regions of the cranium
roof and base
what is the neurocranium
the cranium formed by the top part of the skull
what is the roof of the cranium called
the calvarium
what is the calvarium made up of
frontal
parietal
occipital
what bones make up the base of the skull
frontal
ethmoid
sphenoid
occipital
temperol
parietal
what is articulation
the joining point of the cranial bones
what is the viscerocranium
the facial skeleton
how many bones in the facial skeleton
14
where is the frontal bone
the front
where are the parietal bones
the sides above the ear
where is the occipital bone
back of the skull
where are the temperol bones
around and below the ear
what are cranial sutures
dense fibrous joints made of collagen
they allow bones to move over each other during childbirth to make it easier
where is the coronal suture
between the frontal and parietal bones
where is the sagittal suture
between the two parietal bones
where is the lambdoid suture
between the parieral bones and the occipital bone
where is the anterior fontanelle
between the developing two frontal and parietal bones
when does the anterior fontanelle close
between 18 months and two years
where is the posterior fontanelle
between the sagittal and lamdoid sutures
when does the posterior fontanelle close
6-8 weeks or two months
what forms the cranial base
ethmoid bone
frontal bone
occipital bone
sphenoid bone
temperol bone
what is the mastoid process
prominence of the temperol bone behind the ear where the neck muscles attach
contains mastoid air cells and inflammation of these can be due to middle ear infection.
where does the spinal cord appear
at the foramen magnum
what is the petrous
this is where the middle and ear canal is. it is part of the temperol bone
what is the foramen mangum
large hole in skull where the spinal cord communicates with the brain
where does the olfactory nerve enter the brain
through the cribriform plate of the ethmoid bone